Safely Reducing Proteinuria: 2 Ways to Lower Microalbumin in Urine

Elevated microalbumin in urine is not just a number on a test report, but can be an early sign of kidney damage. This condition, also known as albuminuria, is linked to an increased risk of chronic kidney disease, diabetes, and cardiovascular disease. The good news is that if detected early, lifestyle changes and proper treatment of the underlying cause can help reduce proteinuria and protect kidney function.

In this article, Tiptory helps you understand the meaning of the Microalbumin index, what eating and living habits can help reduce microalbumin in urine, and when medication or retesting is needed according to your doctor's instructions. Experts will focus on practical, easy-to-apply methods so you can understand your kidney health better, not just by looking at a test number.

Effective ways to reduce albuminuria

1. Adjust diet to help reduce proteinuria

• Do not arbitrarily follow an overly low-protein diet. For people with chronic kidney disease, protein intake needs to be adjusted according to kidney function, nutritional status, and the recommendations of a doctor or nutritionist.

• Prioritize low-salt foods, limit processed foods, and control added sugar. Reducing salt and protein intake is one of the dietary changes that can help reduce albumin in urine.

• If you have diabetes, good blood sugar control is also very important, as glucose control can slow kidney damage and reduce the risk of chronic kidney disease progression.

2. Maintain regular exercise and weight control

• Regular exercise, appropriate for your physical condition, helps control blood pressure, blood sugar, and weight—factors closely related to kidney health.

• Instead of trying to exercise too intensely, maintain regular physical activity and gradually increase intensity.

• If you are overweight, reasonable weight loss can contribute to reducing albuminuria and reducing risk factors for kidney disease progression.

3. Blood pressure control

• High blood pressure can increase pressure on the glomeruli and promote kidney damage. Therefore, blood pressure control is an important part of reducing Microalbumin in urine.

• People with diabetes, hypertension, and albuminuria often need their doctor to establish personalized blood pressure targets instead of setting a universal level for everyone.

• You can monitor your blood pressure at home according to healthcare professional instructions and record the results to conveniently assess treatment effectiveness.

4. Take medication as prescribed to protect kidneys

• For people with diabetes, hypertension, and albuminuria, ACE inhibitors (ACEi) or angiotensin II receptor blockers (ARB) may be prescribed by a doctor to control blood pressure and reduce the risk of kidney disease progression.

• Do not buy or increase medication doses yourself just to reduce the Microalbumin index faster. After starting or changing the dose of certain medications, your doctor may need to check creatinine and blood potassium to monitor kidney function and side effects.

• Do not self-combine ACEi with ARB because combining these two drug classes may increase the risk of adverse effects without providing equivalent benefits.

5. Treat the underlying cause of albuminuria

• Albuminuria is not an independent disease but can result from various causes, including diabetes, hypertension, and chronic kidney disease.

• Therefore, the goal is not just to reduce the Microalbumin index on the test but also to control the cause of kidney damage.

• Depending on the specific situation, your doctor may consider adding kidney-protective medications such as SGLT2 inhibitors, non-steroidal mineralocorticoid antagonists, or GLP-1 receptor agonists in suitable individuals.

6. Recheck albuminuria as directed

• Do not evaluate treatment effectiveness based on a single Microalbumin in urine test. Results can vary and need to be considered by your doctor along with blood pressure, blood sugar, creatinine, and eGFR.

• If albuminuria remains elevated or kidney function shows signs of decline, consult your doctor to identify the cause and adjust the treatment plan.

• The ultimate goal of reducing proteinuria is not just to bring a number lower but to limit glomerular damage and reduce the risk of progressing to chronic kidney disease.

Method 1: Lifestyle and diet tips to reduce proteinuria

Tip 1: Diet to help reduce albuminuria

Prioritize a balanced diet, without excessive protein restriction

• Microalbumin in urine can increase when kidneys are damaged. If you have chronic kidney disease, your diet needs to be adjusted to reduce metabolic pressure on the kidneys while still ensuring adequate energy and nutrition.

• Do not arbitrarily switch to an overly strict low-protein diet to reduce proteinuria. KDIGO recommends that adults with chronic kidney disease stages G3–G5 typically maintain about 0.8 g protein/kg body weight/day and avoid excessively high protein intake, especially above 1.3 g/kg/day.

• Appropriate protein intake also depends on weight, age, severity of kidney disease, amount of albumin in urine, and whether dialysis is being performed. People undergoing dialysis often have different protein needs than those not yet on dialysis.

Increase plant-based foods and fiber-rich carbohydrates

• You can prioritize vegetables, whole grains, legumes, and plant-based foods appropriate for your health condition. These choices help build a balanced diet instead of focusing too much on meat and processed foods.

• Some practical options include oats, brown rice, beans, lentils, whole grains, vegetables, and sweet potatoes. However, if kidney function is impaired, the amount of potassium or phosphorus in some foods may also need to be controlled according to test results.

• Plant proteins from beans, lentils, nuts, and whole grains can be incorporated into the diet appropriately. It should not be assumed that all plant foods are inherently safe for people with kidney disease; the diet still needs to be individualized.

Limit salt to help reduce albumin in urine

• Sodium reduction is an important step when aiming to reduce albuminuria, especially if the patient also has hypertension. Eating too much salt can cause fluid retention, increase blood pressure, and put extra strain on the heart and kidneys.

• Limit foods typically high in sodium such as instant noodles, canned soups, processed meats, fast food, bottled sauces, and processed foods.

• When cooking, gradually reduce the amount of salt, prioritize fresh foods, and read nutrition labels to check sodium content. The National Kidney Foundation often recommends that people with kidney disease pay attention to sodium limits, with specific levels adjusted according to individual conditions.

Reduce added sugar and refined carbohydrates

• Limit sugary drinks, sweets, and foods containing a lot of added sugar. This is especially important if the patient has diabetes, as good blood sugar control contributes to kidney protection.

• Instead of focusing on the concept of "slow carbohydrates," prioritize minimally processed, fiber-rich carbohydrates that are appropriate for overall energy needs.

• If you have diabetes or a high Microalbumin index, discuss appropriate carbohydrate intake with your doctor or nutritionist instead of completely eliminating starches yourself.

Choose adequate and good quality protein sources

• There is no need to completely eliminate meat, fish, eggs, or beans. The goal is to control the amount of protein in your diet according to your body's needs and kidney condition.

• You can prioritize appropriate portions of fish, skinless poultry, tofu, and plant-based protein sources; while limiting red meat and processed meats.

• Specifically avoid self-administering protein powders or high-dose protein supplements without consulting a doctor or nutritionist.

Eat enough energy and divide portions appropriately

• Instead of fasting and then eating one large meal, maintain moderate and regular meals to ensure sufficient energy throughout the day.

• However, there is currently no strong evidence that dividing food into several small meals inherently can reduce Microalbumin in urine. More important is that the total amount of protein, sodium, sugar, energy, and nutrients throughout the day must be appropriate.

• People with kidney disease should not eat too little just to reduce proteinuria. Prolonged lack of energy and protein can lead to muscle loss, malnutrition, and worsen overall health.

Adjust diet according to test results

• There is no single "albuminuria-reducing" diet suitable for everyone. Needs for potassium, phosphorus, protein, sodium, and fluid can vary depending on glomerular filtration rate, co-existing conditions, and medications being used.

• If Microalbumin in urine is persistently elevated, it should be evaluated along with urinary albumin-to-creatinine ratio (uACR), eGFR, blood pressure, and blood sugar, rather than just looking at a single test result.

• The safest way to construct a diet to reduce proteinuria through nutrition is to consult a doctor or renal nutritionist to adjust your diet based on your weight, kidney function, and specific test results.

Tip 2: Limit alcohol to protect kidneys

Limit or avoid alcohol when albuminuria is elevated

• If Microalbumin in urine is elevated, prioritize limiting or stopping alcohol to further reduce factors that can harm kidney health.

• It should not be assumed that weak kidneys will make the body "unable to filter alcohol" in the simplistic way the original content describes. Ethanol is primarily metabolized in the liver, while alcohol consumption can indirectly affect the kidneys through blood pressure, dehydration, metabolic disorders, and related diseases.

• For people who already have albuminuria, controlling risk factors such as blood pressure, blood sugar, and alcohol intake is more important than finding an alcoholic beverage "good for the kidneys."

Prioritize non-alcoholic and low-sugar beverages

• Replacing alcohol with plain water is the simplest choice to stay hydrated, unless your doctor advises fluid restriction due to kidney failure or another condition.

• You can choose unsweetened tea or other non-alcoholic, low-sugar beverages according to your preference.

• Limit sugary drinks and fruit juices with added sugar, especially if you are controlling blood sugar or are at risk of kidney disease due to diabetes.

No need to drink red wine to protect kidneys

• Some observational studies have noted a correlation between low alcohol intake and certain health outcomes, but this does not mean red wine has a therapeutic effect or reduces proteinuria.

• Therefore, if you don't currently drink alcohol, you shouldn't start drinking solely for the purpose of protecting your heart or kidneys.

• If you drink alcohol and have an abnormal Microalbumin index, discuss appropriate consumption levels with your doctor. In many cases, significant reduction or complete avoidance of alcohol is a more prudent choice, especially when co-existing liver disease, hypertension, diabetes, or chronic kidney disease.

Set long-term kidney protection goals

• Reducing Microalbumin in urine does not depend on a single food or drink. Effectiveness often comes from simultaneously controlling blood pressure, blood sugar, weight, diet, medication, and other risk factors.

• If albuminuria remains elevated, retesting as directed and evaluation along with urinary albumin-to-creatinine ratio (uACR) and kidney function is necessary.

• Do not self-medicate with wine or any other beverage as a treatment method to reduce proteinuria. The most important goal is to identify and control the cause of kidney damage.

Tip 3: Quit smoking to protect kidneys

Prioritize quitting smoking rather than just reducing the number of cigarettes

• Smoking is linked to an increased risk of developing and progressing kidney disease, and can also exacerbate risk factors such as high blood pressure and cardiovascular disease. Therefore, if you have elevated Microalbumin in urine, quitting smoking is a highly prioritized lifestyle change for long-term kidney protection.

• Do not consider reducing a few cigarettes a day as the ultimate goal. The CDC states that even smoking a few cigarettes a day can be harmful; quitting smoking entirely offers clearer health benefits than simply cutting back.

• If you cannot quit immediately, you can plan to gradually reduce your intake to a specific quit date. However, there is no evidence that a gradual reduction is necessary to avoid withdrawal symptoms; some people may be able to quit completely from the start if it suits them.

Control blood pressure to reduce the burden on kidneys

• Nicotine can increase heart rate and blood pressure, while prolonged high blood pressure is a significant factor contributing to kidney damage. Blood pressure control is therefore particularly important when the goal is to reduce proteinuria and limit the risk of kidney disease progression.

• After quitting smoking, continue to monitor your blood pressure if you have been diagnosed with hypertension. Do not arbitrarily stop blood pressure medication simply because you have quit smoking.

• Effective kidney protection often requires a combination of measures: quitting smoking, controlling blood pressure, blood sugar, weight, diet, and taking prescribed medications.

Develop a realistic quit plan

• Choose a quit date and remove cigarettes, lighters, and ashtrays from commonly used areas.

• Identify situations that make you prone to smoking, such as drinking coffee, alcohol, stress, or meeting other smokers, to proactively change your habits.

• When cravings occur, you can delay for a few minutes, drink water, take a walk, or switch to another activity instead of immediately smoking.

• If quitting is difficult, discuss appropriate smoking cessation support methods with your doctor or healthcare provider. There is no need to "fight" nicotine alone.

Do not expect quitting to immediately reduce Microalbumin

• Quitting smoking to reduce Microalbumin in urine is a long-term kidney protection goal, not a method to instantly lower a test result.

• Albuminuria needs to be evaluated along with other factors such as urinary albumin-to-creatinine ratio (uACR), eGFR, blood pressure, and the cause of kidney damage. KDIGO uses the level of albuminuria along with the glomerular filtration rate to assess and stratify the risk of chronic kidney disease.

• If the Microalbumin index remains elevated despite lifestyle changes, do not try to find additional foods or supplements to address it. Consult your doctor to determine the cause and adjust the appropriate treatment method.

Tip 4: Control blood pressure to protect kidneys

Blood pressure control is an important step when albuminuria is elevated

• Prolonged high blood pressure can damage small blood vessels and glomeruli, thereby increasing albumin in the urine. Therefore, if Microalbumin in urine is high and accompanied by hypertension, blood pressure control is an important part of the strategy to reduce proteinuria and slow the progression of kidney disease. KDIGO recommends that adults with chronic kidney disease and hypertension be treated with individualized blood pressure targets; in suitable individuals, a systolic blood pressure target below 120 mmHg may be considered when measured using a standardized method and the patient tolerates it well. 

Take blood pressure medication exactly as prescribed

• If you have hypertension and albuminuria, your doctor may choose appropriate medication based on the cause, kidney function, level of albuminuria, and co-existing conditions.

Reduce salt and adopt a heart- and kidney-friendly diet

• Limit high-sodium foods such as processed foods, instant noodles, processed meats, canned foods, fast food, and high-sodium sauces.

• Prioritize fresh foods, cook at home, and read labels to control sodium intake. KDIGO recommends that people with chronic kidney disease aim for a sodium intake of less than 2 g/day, equivalent to approximately less than 5 g of salt/day, unless contraindicated. 

• If you have kidney disease, you should not increase potassium intake or use potassium-containing salt substitutes on your own, as some people may experience hyperkalemia.

Exercise regularly, but choose an appropriate intensity

• Regular physical activity helps control blood pressure, weight, and cardiovascular health, thereby contributing to kidney protection.

• You can start with brisk walking or moderate physical activity for about 30 minutes a day, most days of the week, then gradually increase depending on your physical condition.

• It is not necessary to exercise heavily to reap benefits. For sedentary individuals, the important thing is to make physical activity a regular and long-term habit.

• If you have advanced kidney disease, heart disease, or experience unusual symptoms during exercise, you should consult your doctor before increasing your exercise intensity.

Monitor blood pressure correctly at home

• You should not rely on a single reading to conclude high blood pressure. Take measurements at relatively stable times and record the results for your doctor to assess trends.

• Before measuring, you should rest for a few minutes, sit in the correct posture, place your arm in the appropriate position, and use a cuff of the correct size.

• The 2025 AHA/ACC hypertension guidelines classify normal blood pressure as below 120/80 mmHg; 130–139 mmHg or 80–89 mmHg as stage 1 hypertension, and 140 mmHg or 90 mmHg or higher as stage 2. 

• Therefore, the information suggesting that "130/80 mmHg is still normal blood pressure" in the original content is no longer consistent with current classification.

Get enough sleep and manage stress

• Chronic sleep deprivation and stress can make it difficult to control blood pressure. Therefore, maintaining a regular sleep schedule, limiting caffeine in the evening, and creating a quiet sleep environment can support blood pressure control.

• Getting enough sleep should not be viewed as a direct method to reduce microalbumin in urine. This is part of a healthy lifestyle that helps control risk factors affecting the kidneys.

Re-evaluate both blood pressure and albuminuria

• The goal is not just to get blood pressure to a good number, but also to monitor how albuminuria and kidney function change over time.

• During follow-up visits, your doctor may assess blood pressure along with urine albumin-to-creatinine ratio (uACR), eGFR, blood creatinine, and other risk factors.

• If microalbumin levels remain elevated despite controlled blood pressure, further causes should be sought instead of self-increasing medication or changing your diet. KDIGO emphasizes evaluating and treating chronic kidney disease based on risk, cause, and specific characteristics of each individual.

Tip 5: Maintain a healthy weight to protect your kidneys

Control weight to reduce strain on kidneys

• Overweight and obesity can be associated with high blood pressure, insulin resistance, and metabolic disorders, thereby increasing the risk of kidney damage. If you have high microalbumin in your urine, maintaining a healthy weight is an important part of a lifestyle that helps protect kidney function.

• You should not aim for rapid weight loss. Gradual weight loss, combined with an appropriate diet and regular exercise, is usually easier to maintain in the long run.

• The goal of reducing proteinuria does not mean strict fasting or severe protein restriction. Protein intake needs to be adjusted based on kidney function, weight, nutritional status, and co-existing conditions.

Develop a diet that supports both weight loss and kidney health

• Prioritize vegetables, whole grains, and minimally processed foods; limit fast food, processed meats, sugary drinks, and high-sodium foods.

• If you have chronic kidney disease, you should not arbitrarily adopt a "very low protein" diet. KDIGO recommends that many adults with chronic kidney disease stages G3–G5 maintain approximately 0.8 g of protein/kg body weight/day, but actual needs should be individualized.

• When microalbumin levels are elevated, a doctor or dietitian can help create a meal plan suitable for eGFR, potassium, phosphorus, sodium, and conditions such as diabetes or hypertension.

Exercise at least 30 minutes daily

• You can choose moderate activities such as brisk walking, cycling, swimming, or other aerobic exercises.

• Combine cardiovascular exercise with muscle-strengthening exercises to improve overall health and help maintain muscle mass during weight loss.

• If you are just starting, gradually increase duration and intensity instead of trying to exercise heavily right away.

• People with chronic kidney disease or cardiovascular disease should discuss appropriate exercise levels with their healthcare provider, especially if chest pain, unusual shortness of breath, dizziness, or severe fatigue occurs during exercise.

Set realistic weight loss goals

• Instead of just looking at weight, you can also monitor your waist circumference, blood pressure, blood sugar, and weekly activity levels.

• An effective plan should focus on sustainable changes: healthy eating, regular exercise, adequate sleep, and limiting alcohol and tobacco.

• If albuminuria is elevated due to metabolic factors such as obesity, hypertension, or diabetes, improving these factors can help reduce the risk of progressive kidney damage.

Consult a nutritionist if you find it difficult to create a meal plan on your own

• A nutritionist experienced in kidney disease can help balance energy and protein, and adjust sodium, potassium, or phosphorus when necessary.

• This approach is particularly helpful if you need to lose weight and have elevated microalbumin in your urine, as a typical weight loss diet may not be suitable for people with kidney disease.

• The ultimate goal is not just to lose weight, but also to maintain muscle mass, ensure nutrition, and create favorable conditions to reduce albumin in urine and protect kidney function long-term.

Tip 6: Drink enough water to protect your kidneys

Stay adequately hydrated, but don't force yourself to drink too much

• Drinking enough water helps maintain blood volume and supports the kidneys in filtering waste products through urine. Severe dehydration can reduce renal perfusion and cause kidney damage. Therefore, if you have elevated microalbumin in your urine, avoiding chronic dehydration is a beneficial habit for kidney health.

• However, there's no mandatory rule that everyone must drink exactly 8–12 glasses of water a day. Fluid needs vary by weight, age, weather, activity level, diet, and health status.

• Therefore, you should not try to drink 3.7 liters or 2.7 liters of fluid per day based solely on gender as suggested in the original content. For healthy individuals, fluid needs should be individualized.

Recognize and prevent dehydration

• Drink water regularly throughout the day, especially in hot weather, during strenuous activity, or when sweating heavily.

• Thirst, dry mouth, fatigue, infrequent urination, or dark yellow urine can be signs that your body is lacking water.

• When experiencing vomiting, diarrhea, or fever, fluid needs may increase. If you cannot drink enough or show clear signs of dehydration, you should contact a medical facility.

Prioritize plain water and low-sugar beverages

• Plain water is a simple choice because it provides no sugar or calories and helps maintain the necessary fluid volume for the body.

• You can choose some sugar-free beverages that fit your diet and health condition.

• Limit soft drinks, sodas, and other sugary beverages. This is especially important if you have diabetes or need to control your weight to help reduce albumin in your urine.

Do not use water to "flush" albumin from the kidneys

• Drinking more water than your body needs is not a direct way to reduce proteinuria. Albuminuria reflects albumin leakage through the glomeruli and its cause needs to be evaluated.

• Therefore, if microalbumin levels remain elevated, you should not try to drink a lot of water with the expectation that the levels will quickly return to normal.

• The correct goal is to maintain adequate hydration while also controlling other important factors such as blood pressure, blood sugar, diet, and underlying kidney disease.

Limit high-salt foods

• High sodium intake can increase blood pressure and adversely affect people with kidney disease. KDIGO recommends that people with chronic kidney disease aim for a sodium intake of less than 2 g/day, equivalent to approximately less than 5 g of salt/day, unless there is a special medical reason to do otherwise.

• You should limit instant noodles, canned goods, processed meats, fast food, bottled sauces, and overly salty dishes.

• Reducing sodium does not mean you have to abstain from drinking water. These are two different issues but both are important for controlling blood pressure and protecting the kidneys.

Pay special attention if you have advanced kidney disease

• Not everyone with albuminuria needs to drink a lot of water. As kidney disease progresses or in kidney failure, some people may need to restrict fluid intake because their kidneys can no longer effectively excrete water. Drinking too much can lead to edema, shortness of breath, high blood pressure, and fluid overload.

• Individuals on dialysis or with heart failure, edema, or decreased urine output must adhere to the fluid intake prescribed by their treating physician.

• If you don't know how much water you should drink, ask your doctor or a dietitian, especially if you have been diagnosed with chronic kidney disease.

Combine adequate hydration with measures to reduce albuminuria

• Drinking enough water to reduce microalbumin in urine should be understood as maintaining adequate hydration, not drinking as much as possible.

• At the same time, control blood pressure, blood sugar, weight, and sodium and protein intake according to medical guidelines.

• If microalbumin in urine remains elevated, the urine albumin-to-creatinine ratio (uACR), eGFR, and underlying causes should be evaluated instead of simply increasing fluid intake. KDIGO currently views the assessment of albuminuria and kidney function as important components in managing chronic kidney disease.

Tip 7: Control blood sugar to protect your kidneys

Limit sugar to control blood sugar and reduce the risk of kidney damage

• Prolonged high blood sugar, especially in people with diabetes, can damage the small blood vessels in the kidneys and increase the risk of albuminuria. Therefore, blood glucose control is an important part of wanting to reduce microalbumin in urine and protect kidney function.

• Limit sugary drinks, milk tea, pastries, sweetened beverages, and foods containing added sugar. At the same time, refined carbohydrate portions such as white bread, white rice, or sweet cakes should be controlled instead of completely eliminating carbohydrates.

• Prioritize minimally processed foods rich in fiber and suitable for kidney condition. If you have chronic kidney disease, potassium, phosphorus, protein, and carbohydrate intake may also need to be adjusted based on lab tests and expert guidance.

Understand blood sugar levels correctly

• Fasting blood sugar below 100 mg/dL (5.6 mmol/L) is generally considered normal.

• Fasting blood sugar from 100–125 mg/dL (5.6–6.9 mmol/L) falls into the pre-diabetes category.

• Fasting blood sugar of 126 mg/dL (7.0 mmol/L) or higher is within the diagnostic range for diabetes, but if there is no clear hyperglycemia, the result needs to be confirmed by an appropriate test. ADA 2026 also uses HbA1c, fasting blood sugar, and glucose tolerance tests for diagnosis.

• Therefore, you should not conclude that you have diabetes from a single home blood sugar measurement.

Do not use a single blood sugar number to evaluate albuminuria

• The statement that the kidneys of people with diabetes have a "post-meal threshold of 180 mg/dL" and that glucose exceeding this level directly increases albumin is an oversimplification.

• Assessing blood sugar control requires considering many factors, usually including blood sugar, HbA1c, and overall health status.

• Similarly, microalbumin levels should not be evaluated in isolation. Doctors often consider the urine albumin-to-creatinine ratio (uACR), eGFR, blood pressure, and other risk factors to assess kidney health.

Maintain regular exercise

• Physical activity helps improve insulin sensitivity, supports weight, blood pressure, and blood sugar control.

• You can start with brisk walking, cycling, swimming, or moderate activities for about 30 minutes a day, depending on your physical condition.

• If you haven't exercised in a long time, gradually increase the duration and intensity instead of overdoing it right away.

• People with chronic kidney disease, heart disease, or diabetic complications should discuss safe exercise levels with their doctor.

Control blood sugar with multiple measures simultaneously

• A reasonable diet will be more effective when combined with exercise, weight control, adequate sleep, and correctly prescribed diabetes medication.

• If you are taking medication or insulin, do not arbitrarily reduce the dose just because blood sugar has improved. Excessive blood sugar control can also cause hypoglycemia.

• For people with chronic kidney disease and diabetes, the treatment plan should be individualized based on kidney function and cardiovascular risk. KDIGO considers controlling metabolic and cardiovascular factors as an important part of chronic kidney disease management.

Monitor albuminuria if you have diabetes

• If you have diabetes and find elevated microalbumin in your urine, you should not only focus on avoiding sugar.

• Check and control blood pressure, blood sugar, weight, and other kidney disease risk factors simultaneously.

• Re-testing uACR as recommended by your doctor helps assess whether proteinuria reduction is achieved and whether kidney function changes over time.

• The ultimate goal is not just to lower microalbumin levels but to control the causes of kidney damage and reduce the risk of progression to chronic kidney disease.

Method 2: Medications and treatments to reduce proteinuria

Method 1: Correctly test for albuminuria

Urine albumin-to-creatinine ratio test helps detect early kidney abnormalities

• Microalbumin in urine can increase before the patient shows obvious symptoms. Therefore, albuminuria testing plays an important role in early detection of kidney damage, especially in people with diabetes, hypertension, or at risk of chronic kidney disease.

• The commonly used test is the urine albumin-to-creatinine ratio, abbreviated as uACR or ACR. Only a small urine sample is needed; it is not necessary to collect all urine for 24 hours. KDIGO prioritizes ACR testing on a midstream morning urine sample when possible.

• ACR levels below 30 mg/g are generally considered normal or mildly elevated; 30 mg/g or higher may suggest albuminuria and requires evaluation and confirmation in the appropriate clinical context.

Step-by-step testing procedure

1. Collect the urine sample at the right time: If possible, the first morning urine sample should be collected midstream. This method yields more consistent results and is preferred by KDIGO for assessing albuminuria.

2. Laboratory ACR testing: The urine sample is analyzed for albumin and creatinine levels, and then the albumin-to-creatinine ratio is calculated. Using this ratio helps to mitigate the impact of overly concentrated or overly diluted urine.

3. Confirm if results are elevated: A single abnormal test result is not sufficient to conclude that you have chronic kidney disease. If ACR is 30 mg/g or higher in a random urine sample, KDIGO recommends confirmation with a subsequent midstream morning urine sample.

4. Monitor over time: If albuminuria is persistently elevated, your doctor may combine ACR with blood creatinine, eGFR, blood pressure, and other tests to assess risk and kidney function.

24-hour urine collection is not always necessary

• The original content refers to 24-hour urine collection as a common method, but currently, uACR on a spot urine sample is often more convenient and appropriate for initial assessment.

• 24-hour urine collection can be prone to errors if a void is missed or collection times are inaccurate. KDIGO suggests that a spot urine sample with ACR is a practical choice for assessing albuminuria in many cases.

Avoid factors that may distort results

• Testing should not be done immediately after intense physical activity, as exercise can temporarily increase albumin levels in the urine.

• Urinary tract infections, hematuria, or menstruation can also affect albuminuria results. If experiencing these conditions, inform healthcare staff before collecting the sample.

• Fluid intake and urine concentration also influence albumin levels. This is one reason why ACR is more useful when comparing results between samples.

• Dietary protein intake and activity levels can affect creatinine excretion, thereby impacting ACR. Therefore, do not arbitrarily change your diet or exercise regimen solely to "improve" test results.

Don't just look at one Microalbumin test result

• Microalbumin levels can fluctuate due to various temporary factors. A high result does not necessarily mean you have chronic kidney disease.

• If ACR is elevated, your doctor will usually need to confirm with repeat testing and consider potentially reversible causes before assessing long-term risk.

• If albuminuria is persistently elevated, regular monitoring helps detect early changes in kidney function and adjust treatment. For individuals with chronic kidney disease, the frequency of ACR and eGFR monitoring is chosen based on disease stage and risk of progression.

Combine testing with kidney protection measures

• The goal of checking microalbumin in urine is not just to know a number but to identify the risk of kidney damage for early intervention.

• If albuminuria is elevated, discuss with your doctor about blood pressure, blood sugar, weight control, diet, and appropriate medications.

• Effective reduction of proteinuria should be based on the cause and specific health condition, rather than merely trying to lower test results in the short term.

Method 2: Correctly interpreting albuminuria levels

Compare results with appropriate albuminuria thresholds

• When you receive your test results, first check the unit of measurement. Do not apply the same threshold for 24-hour albuminuria and urine albumin-to-creatinine ratio (uACR).

• According to KDIGO 2024, albuminuria is categorized into 3 main groups based on 24-hour albumin excretion or uACR: A1, A2, and A3.

• For 24-hour albuminuria:

  • Below 30 mg/24 hours: A1, normal to mildly increased.

  • 30–300 mg/24 hours: A2, moderately increased.

  • 300 mg/24 hours or higher: A3, severely increased.

• For uACR:

  • Below 30 mg/g: A1, normal to mildly increased.

  • 30–299 mg/g: A2, moderately increased.

  • 300 mg/g or higher: A3, severely increased.

Correctly understand the meaning of each level

• A1 usually does not suggest significant albuminuria, but it still needs to be evaluated with eGFR and other indicators if the patient is at risk for kidney disease.

• A2 often corresponds to the previous term microalbuminuria and can be an early sign of kidney damage. However, a single A2 result is not sufficient to diagnose chronic kidney disease.

• A3 indicates a significant increase in albumin in the urine and is associated with a higher risk of kidney disease and cardiovascular events. Individuals with an A3 result should have the cause and appropriate treatment plan evaluated by a doctor.

Do not confuse albuminuria with total proteinuria

• Microalbumin in urine reflects the amount of albumin, a specific type of protein, not the total amount of protein in the urine.

• The uACR test measures albumin and creatinine separately and then calculates the ratio, while uPCR measures total protein and creatinine. The two tests have different purposes and interpretations.

• Therefore, if the test report states "proteinuria," "uPCR," or "protein/creatinine ratio," you should not use the thresholds for microalbumin levels for self-interpretation.

Do not conclude kidney disease from a single high result

• Albuminuria can temporarily increase due to several factors such as strenuous exercise, infection, hematuria, or acute conditions. Therefore, an abnormal result often needs to be rechecked under appropriate circumstances.

• The National Kidney Foundation notes that if uACR is high, healthcare professionals may request repeat testing to confirm if albuminuria is persistent. Two elevated results within 3 months or more could be a sign of kidney disease.

• Therefore, you should not be overly concerned by just one high microalbumin in urine test, but neither should you ignore this result.

Assess albuminuria along with kidney function

• To accurately understand microalbumin levels, doctors often consider uACR, eGFR, blood creatinine, blood pressure, blood glucose, and underlying conditions simultaneously.

• KDIGO classifies chronic kidney disease based on cause, glomerular filtration rate (G), and albuminuria level (A), rather than solely on albuminuria.

• For example, a person with a uACR of 80 mg/g and normal eGFR will have a different risk level than someone with the same uACR but significantly reduced eGFR.

Discuss with your doctor about ways to reduce proteinuria

• If albuminuria is persistently elevated, the goal is not just to return the test results to "normal" but to find and control the cause of albumin leakage through the glomeruli.

• Depending on the case, your doctor may adjust blood pressure, blood sugar, diet, or use medications that protect the kidneys.

• Do not self-medicate or take supplements simply to quickly reduce proteinuria. Treatment should be based on the cause, eGFR, albuminuria level, and co-existing conditions.

Method 3: ACEi and ARB help reduce albuminuria

ACEi or ARB can help reduce albuminuria and protect the kidneys

• Angiotensin-converting enzyme inhibitors (ACEi) and angiotensin II receptor blockers (ARB) act on the renin-angiotensin-aldosterone system, helping to lower blood pressure and reduce pressure in the glomeruli. This can lead to a reduction in albumin leakage into the urine for suitable individuals.

• According to KDIGO 2024, ACEi or ARB are specifically recommended for individuals with chronic kidney disease and albuminuria levels A2–A3, especially when accompanied by hypertension. These are crucial drug classes for both controlling blood pressure and slowing the progression of kidney disease.

• The goal of treatment is not just to lower the microalbumin level but also to reduce the risk of kidney function decline and cardiovascular events.

Use medication as prescribed; do not self-purchase to reduce proteinuria

• Some commonly used ACE inhibitors include captopril, enalapril, lisinopril, perindopril, and ramipril. The choice of drug and dosage depends on blood pressure, kidney function, blood potassium, and co-existing conditions.

• If ACEi are not suitable, doctors may consider ARB. These two drug classes have similar effects in protecting the kidneys, but ACEi and ARB should not be combined without medical supervision as this can increase the risk of adverse effects.

• Do not self-increase the dosage with the goal of reducing microalbumin in urine faster. KDIGO recommends using the highest approved dose tolerated by the patient when indicated, under the supervision of a physician.

Check creatinine and potassium after starting medication

• ACEi and ARB can alter creatinine and blood potassium, especially when first started or when the dose is increased.

• KDIGO recommends checking blood pressure, creatinine, and potassium approximately 2–4 weeks after starting or changing the dose, with the specific timing depending on baseline kidney function and blood potassium.

• A mild decrease in eGFR after starting treatment can occur and does not necessarily mean the medication is causing kidney damage. However, if eGFR decreases by 30% or more, the cause needs to be evaluated and treatment adjusted if necessary.

Monitor for signs that require informing a doctor

• If severe dizziness, symptomatic hypotension, muscle weakness, or other abnormal symptoms appear after taking the medication, contact a doctor.

• Hyperkalemia can occur with ACEi or ARB use. In many cases, a doctor can manage hyperkalemia instead of immediately discontinuing the medication.

• Do not stop medication on your own just because you see that microalbumin in urine has decreased. Discontinuing or reducing the dose requires a comprehensive evaluation by a doctor.

Assess effectiveness by both albuminuria and kidney function

• After treatment, doctors may monitor uACR, eGFR, blood creatinine, and blood pressure to assess response.

• If albuminuria remains high despite using ACEi or ARB at the maximum tolerated dose, the doctor may consider other kidney protective measures depending on the cause and co-existing conditions. KDIGO 2024 also recommends SGLT2i for many individuals with chronic kidney disease who meet the criteria for eGFR and albuminuria.

• Therefore, reducing proteinuria should be seen as part of a comprehensive kidney protection strategy, rather than solely focusing on reducing a single test result.

Method 4: Statins help protect cardiovascular and kidney health

Discuss statins with your doctor if you have a high cardiovascular risk

• Statins are a class of drugs that lower LDL cholesterol by inhibiting the HMG-CoA reductase enzyme, thereby reducing the risk of plaque formation and cardiovascular events such as heart attack and stroke.

• In individuals with chronic kidney disease, cardiovascular risk is often higher. KDIGO recommends statin therapy or statin combined with ezetimibe for many individuals with chronic kidney disease based on age, eGFR, and cardiovascular risk.

• Therefore, if you have elevated microalbumin in urine along with chronic kidney disease, diabetes, dyslipidemia, or other cardiovascular risk factors, ask your doctor if statins are appropriate for you.

Do not consider statins as direct treatment for albuminuria

• The original content suggests that lowering cholesterol will help "the kidneys filter more easily" and directly reduce microalbumin levels, which is an inaccurate interpretation.

• The clearest proven benefit of statins is lowering LDL cholesterol and reducing the risk of atherosclerotic cardiovascular disease. KDIGO emphasizes that statin use in chronic kidney disease is primarily based on cardiovascular risk, not solely on cholesterol levels.

• Therefore, you should not self-administer statins solely with the goal of reducing proteinuria. If albuminuria is elevated, it is necessary to simultaneously address the causes and risk factors for kidney damage such as hypertension, diabetes, and chronic kidney disease.

Commonly used statins

• Some common medications include atorvastatin, rosuvastatin, simvastatin, pravastatin, lovastatin, fluvastatin, and pitavastatin.

• Not all statins are suitable for everyone. Doctors will select the drug and intensity of treatment based on age, LDL cholesterol, heart disease, kidney disease, current medications, and risk of side effects.

• For individuals with type 2 diabetes aged 40–75 years without established atherosclerotic cardiovascular disease, ADA 2026 recommends moderate-intensity statins; if cardiovascular risk is higher, high-intensity statins may be needed.

Monitor cholesterol after starting statins

• Doctors typically check lipid levels before starting treatment to establish a baseline.

• After starting statins or changing the dose, ADA 2026 recommends rechecking a lipid profile after approximately 4–12 weeks, then monitoring periodically, usually annually if the condition is stable.

• If muscle pain, muscle weakness, or other persistent abnormal symptoms appear, inform your doctor instead of arbitrarily stopping the medication.

Combine statins with kidney protection measures

• Statins do not replace proven measures to control albuminuria, such as controlling blood pressure, blood sugar, weight, diet, and using kidney protective medications when indicated.

• If microalbumin in urine is persistently elevated, simultaneous monitoring of uACR, eGFR, blood pressure, and cardiovascular risk factors should be done.

• The treatment goal should consider the entire picture: both reducing proteinuria and maintaining kidney function and reducing the long-term risk of heart attack and stroke. ADA 2026 confirms that the cardiovascular benefits of statins outweigh the small risk of increasing the likelihood of developing diabetes in at-risk individuals.

Method 5: Use insulin as directed to protect the kidneys

Use insulin as indicated for diabetes

• Insulin helps transport glucose from the blood into cells for energy. For individuals with diabetes who require insulin therapy, good blood sugar control can help limit kidney damage caused by prolonged hyperglycemia.

• However, insulin is not a direct treatment for microalbumin in urine. If the body still produces and uses insulin appropriately, self-administering additional insulin will not help reduce proteinuria and can even cause dangerous hypoglycemia.

• ADA 2026 recommends considering insulin in individuals with type 2 diabetes when they have symptoms of hyperglycemia or very high blood glucose/HbA1c, such as glucose ≥300 mg/dL or HbA1c >10%. For many individuals with type 2 diabetes without severe hyperglycemia, GLP-1-based medications are often preferred over insulin.

Do not arbitrarily increase or decrease insulin dose

• Insulin doses need to be individualized based on blood glucose, diet, activity level, type of insulin, and kidney function.

• As kidney function declines, the risk of hypoglycemia from insulin can increase, and insulin requirements may change. ADA 2026 notes the need to monitor and adjust treatment as eGFR declines.

• If you frequently experience low blood sugar, shaky hands, sweating, intense hunger, confusion, or other signs of hypoglycemia, you should contact your doctor to reassess your treatment plan.

Blood Sugar Control to Protect Kidneys

• If Microalbumin in urine is elevated in a diabetic individual, the key goal is to achieve good blood sugar control while also managing other risk factors such as high blood pressure and dyslipidemia.

• Do not rely solely on a single blood glucose reading. Your doctor may monitor HbA1c, blood glucose, and uACR along with eGFR to assess both diabetes control and kidney health.

• ADA 2026 recommends evaluating uACR and eGFR at least annually in individuals with type 2 diabetes and in individuals with type 1 diabetes after at least 5 years of the disease; individuals with established chronic kidney disease require more frequent monitoring depending on their risk level.

Ask your doctor about SGLT2 inhibitors if you have type 2 diabetes and chronic kidney disease

• SGLT2 inhibitors are not insulin and do not replace insulin if the body requires it. This class of drugs has renoprotective and cardiovascular benefits for many individuals with type 2 diabetes and chronic kidney disease.

• ADA 2026 recommends SGLT2 inhibitors or GLP-1 receptor agonists with evidence of benefit for individuals with type 2 diabetes, chronic kidney disease, and albuminuria or reduced eGFR, to slow kidney disease progression and reduce cardiovascular events.

• SGLT2 inhibitors can also reduce pressure within the glomeruli and albuminuria, with renoprotective benefits potentially occurring even when the hypoglycemic effect is reduced at low eGFR levels.

Do not self-prescribe SGLT2 inhibitors to reduce Microalbumin

• The choice of SGLT2 inhibitor depends on the type of diabetes, eGFR, albuminuria level, cardiovascular disease, risk of dehydration, and other medications being used.

• These drugs have specific contraindications and safety considerations, so they must be prescribed and monitored by a doctor.

• The treatment goal is not just to lower the Microalbumin index temporarily but also to maintain kidney function, control blood sugar, and reduce long-term cardiovascular risk.

Nicholas Reed Family general practitioner

Graduated from Columbia University Vagelos College of Physicians and Surgeons, with over 14 years of experience in internal medicine and preventive health counseling. Currently working at NYU Langone Health, known for a compassionate and meticulous treatment style.