CKD stage 1 is an early category of chronic kidney disease in which the estimated glomerular filtration rate (eGFR) is usually 90 mL/min/1.73 m² or higher, but there is evidence of kidney damage that has persisted for at least three months.

This distinction is important. A normal or near-normal eGFR does not necessarily mean that the kidneys are completely healthy. Persistent albumin or protein in the urine, certain structural abnormalities or other evidence of kidney damage may indicate CKD even when filtration remains relatively well preserved.

Because early kidney disease can cause few or no noticeable symptoms, appropriate testing and follow-up are important.

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides evaluation and management for kidney conditions ranging from early CKD to advanced kidney disease.

What Does CKD Stage 1 Mean?

Chronic kidney disease is generally diagnosed when abnormalities of kidney structure or function are present for at least three months and have implications for health.

Stage 1 generally represents:

• eGFR of 90 or above

• Evidence of kidney damage

• Persistent abnormal urine findings or other recognized markers of kidney damage

A single abnormal urine or blood test does not automatically establish chronic kidney disease. Repeat testing may be necessary.

CKD Stage 1 vs Normal Kidney Function

This is one of the most important points to understand.

A person can have an eGFR above 90 and still have CKD if there is persistent evidence of kidney damage.

For example, a person may have:

• Persistent albuminuria

• Certain abnormalities on kidney imaging

• Evidence of a specific kidney disease

Therefore, doctors evaluate both kidney filtration and evidence of kidney damage.

What Causes CKD Stage 1?

Early CKD can have many causes.

Diabetes

High blood glucose over time can damage the kidney's filtering structures and may cause albumin to appear in the urine.

High Blood Pressure

Long-standing hypertension can damage the small blood vessels within the kidneys.

Glomerular Diseases

Conditions affecting the kidney's filtering units can produce protein or blood in the urine.

Family History

Some inherited kidney disorders can be detected before substantial loss of filtration occurs.

Structural Kidney Problems

Abnormal kidney structure or urinary tract problems may sometimes be identified through imaging.

Previous Kidney Injury

An earlier episode of significant kidney injury may increase the risk of later chronic kidney problems.

Does CKD Stage 1 Cause Symptoms?

Usually, CKD stage 1 does not cause obvious symptoms.

The kidneys can maintain many of their functions even when early damage is present.

If symptoms occur, they may be caused by the underlying condition rather than CKD itself.

Possible warning signs include:

• Foamy or unusually bubbly urine

• Blood in urine

• Swelling

• High blood pressure

• Changes in urination

However, these symptoms can have many different causes.

How Is CKD Stage 1 Diagnosed?

Diagnosis generally involves more than one test.

eGFR

The eGFR estimates how effectively the kidneys filter blood.

In stage 1 CKD, eGFR is generally 90 or higher.

Urine Albumin-to-Creatinine Ratio

The urine albumin-to-creatinine ratio (UACR) can identify albumin leakage through the kidneys.

Persistent albuminuria can be an important marker of kidney damage.

Routine Urinalysis

A urine examination may detect:

• Blood

• Protein

• Other abnormalities

Blood Tests

Depending on the patient's circumstances, the doctor may evaluate:

• Creatinine

• Electrolytes

• Blood glucose

• Other relevant parameters

Kidney Imaging

Ultrasound or other imaging may be recommended when structural abnormalities, obstruction or other conditions need to be assessed.

Why Is Early CKD Important?

CKD can progress at different rates.

Some people with early kidney disease remain stable for many years, particularly when the underlying cause and risk factors are well controlled.

Others may experience progression.

Identifying CKD early gives patients and doctors an opportunity to address factors that may contribute to kidney damage.

CKD Stage 1 Treatment

There is no single treatment for every person with stage 1 CKD.

Treatment focuses primarily on identifying the cause and protecting kidney function.

Control Blood Pressure

Maintaining appropriate blood pressure is an important part of kidney protection.

If albuminuria is present, a doctor may select medicines that provide kidney-protective benefits in appropriate patients.

Manage Blood Sugar

People with diabetes should follow an individualized diabetes management plan.

Good glucose control can reduce the risk of diabetes-related kidney damage.

Address Albuminuria

Persistent albumin in urine should be investigated.

Depending on the cause and other medical factors, specific medicines may be recommended.

Treat the Underlying Kidney Disease

Some kidney diseases require specific treatment, such as medicines for inflammatory or immune-related conditions.

The appropriate treatment depends on the diagnosis.

Review Medications

Certain medicines can affect kidney function, particularly when used inappropriately or in people with kidney disease.

Tell your doctor about all prescription medicines, over-the-counter products and supplements you use.

CKD Stage 1 Diet

There is no universal “stage 1 CKD diet” that applies to every patient.

Dietary recommendations should consider:

• Cause of CKD

• Blood pressure

• Diabetes

• Urine protein levels

• Body weight

• Potassium level

• Other medical conditions

Reduce Excess Sodium

High sodium intake can contribute to elevated blood pressure and fluid-related problems.

Limiting highly processed and excessively salty foods can be helpful.

Choose a Balanced Diet

A diet rich in vegetables, fruits, whole grains and other minimally processed foods may support overall cardiovascular health, provided there are no individual restrictions.

Avoid Extreme High-Protein Diets

Very high protein intake may not be appropriate for some people with CKD.

Protein requirements should be individualized rather than eliminated unnecessarily.

Lifestyle Changes for CKD Stage 1

Several everyday habits can support long-term kidney and cardiovascular health.

Maintain a Healthy Weight

Excess body weight can increase the risk of diabetes, hypertension and kidney disease progression.

Stay Physically Active

Regular physical activity can support blood pressure, weight and cardiovascular health.

Avoid Smoking

Smoking increases cardiovascular risk and can negatively affect overall kidney health.

Limit Excessive Alcohol

Alcohol intake should be discussed in the context of the individual's overall health and medications.

Attend Follow-Up Appointments

Regular monitoring helps identify changes in kidney function or urine findings.

Can CKD Stage 1 Be Reversed?

The answer depends on what caused the kidney abnormality.

Some findings may improve when a temporary or treatable cause is addressed.

However, established chronic kidney damage may not be completely reversible.

The objective is often to:

• Identify the underlying cause

• Reduce ongoing kidney stress

• Control blood pressure and diabetes

• Reduce albuminuria when appropriate

• Monitor kidney function

• Prevent progression

How Often Should CKD Stage 1 Be Monitored?

There is no single monitoring schedule for every patient.

The appropriate frequency depends on:

• Cause of CKD

• Albuminuria level

• Blood pressure

• Diabetes status

• Previous test results

• Rate of change in kidney function

Your nephrologist can determine an appropriate follow-up plan.

Can CKD Stage 1 Progress to Kidney Failure?

It can, but progression is not inevitable.

The risk varies significantly between individuals.

Factors associated with higher progression risk can include:

• Significant persistent albuminuria

• Poorly controlled blood pressure

• Poorly controlled diabetes

• Certain progressive kidney diseases

• Repeated episodes of acute kidney injury

Early identification and appropriate management can help reduce avoidable risks.

When Should You See a Nephrologist?

Consider specialist evaluation if you have:

• Persistent protein or albumin in urine

• Unexplained blood in urine

• Abnormal kidney imaging

• Repeated abnormal kidney tests

• Diabetes with evidence of kidney involvement

• Difficult-to-control hypertension

• A family history of significant kidney disease

• A known kidney disorder

A nephrologist can help determine whether an abnormal result represents CKD and identify its underlying cause.

CKD Stage 1 Care at Prabhakar Bhurke Clinic

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke provides specialist assessment and ongoing management for patients with kidney disease.

Depending on the patient's condition, evaluation may include:

• Kidney function assessment

• Urine albumin and protein evaluation

• Blood pressure assessment

• Diabetes-related kidney evaluation

• Medication review

• Kidney imaging review

• Investigation of the underlying cause

• Personalized kidney-protection strategies

• Long-term monitoring

The treatment approach is individualized according to the patient's kidney findings and overall health.

Frequently Asked Questions

What is CKD stage 1?

CKD stage 1 generally means there is evidence of kidney damage that has persisted for at least three months while eGFR remains 90 mL/min/1.73 m² or higher.

Are there symptoms of stage 1 CKD?

Many people have no symptoms. Early CKD is often discovered through routine blood or urine testing.

Can stage 1 CKD go away?

A temporary abnormal test may improve when its cause is treated. Confirmed chronic kidney disease indicates persistent kidney abnormalities and requires appropriate monitoring.

What should I avoid with CKD stage 1?

Avoid unnecessary use of potentially kidney-harming medicines and extreme diets or supplements. Specific restrictions should be based on your test results and doctor's recommendations.

Can someone with CKD stage 1 live a normal life?

Many people with early CKD can maintain an active life, particularly when the underlying cause and risk factors are appropriately managed.

Conclusion

CKD stage 1 is an early form of chronic kidney disease that may exist even when eGFR is normal or near normal. Persistent albuminuria, structural abnormalities or other evidence of kidney damage can be important clues.

Because early CKD may not cause noticeable symptoms, appropriate blood and urine testing is valuable for people at increased risk. Once CKD is identified, treating its underlying cause, controlling blood pressure and diabetes, maintaining a healthy lifestyle and attending regular follow-up can help protect kidney function.

For specialized kidney evaluation and personalized CKD management, consult Dr. Sandip Prabhakar Bhurke at Prabhakar Bhurke Clinic.

Medical Disclaimer

This article is intended for general educational purposes only and does not constitute medical advice, diagnosis or treatment. CKD stage 1 can have different causes and risk levels, and a single abnormal blood or urine test does not necessarily establish chronic kidney disease. Do not start, stop or change medicines, supplements or dietary restrictions without professional guidance. Patients with concerning symptoms or rapidly changing kidney test results should seek prompt medical evaluation. Consult Dr. Sandip Prabhakar Bhurke or another qualified nephrologist for individualized assessment and treatment.