4th stage kidney disease, commonly called Stage 4 chronic kidney disease (CKD), means that kidney function is significantly reduced.

Stage 4 CKD generally corresponds to an eGFR of 15 to 29 mL/min/1.73 m² that persists for at least three months or is accompanied by other evidence establishing chronic kidney disease.

At this stage, the kidneys have lost a substantial amount of their filtering capacity. However, Stage 4 kidney disease does not automatically mean that dialysis must start immediately.

Treatment at this stage focuses on identifying the cause of kidney disease, slowing further loss of kidney function, treating complications and preparing for possible kidney replacement therapy when appropriate.

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized evaluation and management for patients with advanced kidney disease.

What Does an eGFR of 15 to 29 Mean?

The estimated glomerular filtration rate (eGFR) is an important measure of kidney filtration.

An eGFR between 15 and 29 falls within the Stage 4 CKD category when the abnormality is chronic.

A single low eGFR does not necessarily establish Stage 4 CKD because kidney function can temporarily fall during conditions such as:

• Dehydration

• Acute kidney injury

• Severe infection

• Urinary obstruction

• Certain medication-related kidney problems

Doctors therefore consider previous kidney-function results, urine findings, symptoms and the overall clinical picture.

What Causes Stage 4 Kidney Disease?

Many different kidney conditions can eventually lead to advanced CKD.

Common causes include:

Diabetes

Long-standing diabetes can damage the small blood vessels and filtering structures of the kidneys.

Persistent albumin in the urine can be an important marker of diabetic kidney damage.

High Blood Pressure

Uncontrolled hypertension can progressively damage kidney blood vessels and filtration structures.

Kidney disease can also contribute to high blood pressure, creating a cycle that requires careful management.

Glomerular Diseases

Conditions affecting the kidney's filtering units may cause:

• Proteinuria

• Blood in the urine

• Reduced kidney function

• Swelling

Examples include certain forms of glomerulonephritis and FSGS.

Polycystic Kidney Disease

Inherited conditions such as autosomal dominant polycystic kidney disease can progressively reduce kidney function in some patients.

Repeated Kidney Injury

Repeated episodes of acute kidney injury, obstruction, infection or other kidney insults may contribute to chronic kidney damage.

Other Causes

Stage 4 CKD can also result from:

• Congenital kidney abnormalities

• Autoimmune kidney diseases

• Reflux-related kidney damage

• Long-standing urinary obstruction

• Certain inherited disorders

• Some medication or toxin-related kidney injuries

Identifying the underlying cause can influence treatment and monitoring.

Symptoms of 4th Stage Kidney Disease

Some people with Stage 4 CKD may have few symptoms, while others develop noticeable problems as kidney function decreases.

Possible symptoms include:

• Persistent tiredness

• Swelling around the ankles or feet

• Puffiness around the eyes

• Changes in urine output

• Foamy urine

• Nausea

• Reduced appetite

• Itching

• Muscle cramps

• Sleep disturbances

• Breathlessness

• Difficulty concentrating

• Changes in taste

These symptoms are not specific to Stage 4 CKD, so medical testing is necessary to determine the cause.

Can Stage 4 Kidney Disease Exist Without Symptoms?

Yes.

Kidney disease can progress quietly, particularly when changes develop gradually.

A person may discover Stage 4 CKD during routine blood testing or an evaluation for another health condition.

This is why people with risk factors such as diabetes, hypertension or a history of kidney disease may need regular monitoring even when they feel well.

What Happens to the Body in Stage 4 CKD?

As kidney filtration declines, the kidneys may become less effective at:

• Removing waste products

• Maintaining fluid balance

• Regulating electrolytes

• Maintaining acid-base balance

• Supporting healthy red blood cell production

• Regulating mineral and bone metabolism

Consequently, Stage 4 CKD can be associated with complications such as:

• Anemia

• High potassium

• Metabolic acidosis

• Fluid retention

• Mineral and bone abnormalities

• High blood pressure

• Cardiovascular complications

Not every patient develops all of these problems.

Regular laboratory monitoring allows complications to be detected and managed appropriately.

How Is 4th Stage Kidney Disease Diagnosed?

Diagnosis usually involves more than a creatinine test.

A nephrologist may review:

Kidney Function

Testing may include:

• Serum creatinine

• eGFR

• Blood urea

Urine Testing

Doctors may assess:

• Urine albumin

• Protein

• Blood

• Other abnormalities

A urine albumin-to-creatinine ratio (UACR) can help assess the degree of albuminuria.

Blood Tests

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

• Potassium

• Sodium

• Bicarbonate

• Hemoglobin

• Calcium

• Phosphorus

• Glucose

Imaging

Ultrasound or other imaging may be recommended when doctors need to evaluate:

• Kidney size

• Obstruction

• Stones

• Cysts

• Structural abnormalities

Is Stage 4 Kidney Disease Reversible?

Whether kidney function can improve depends on the underlying cause.

Established chronic kidney scarring generally cannot simply be reversed.

However, a patient diagnosed with advanced kidney disease may sometimes have an additional reversible problem causing a sudden deterioration.

For example:

• Dehydration

• Infection

• Urinary obstruction

• Certain medication-related kidney injuries

• Acute illness

may cause a temporary worsening of kidney function.

Treating the reversible problem may improve kidney function from its recent low point.

Therefore, a sudden creatinine increase in someone with Stage 4 CKD should not automatically be assumed to represent permanent progression.

Treatment for 4th Stage Kidney Disease

There is no single medicine that treats every case of Stage 4 CKD.

Treatment is tailored to the cause, kidney function, urine albumin, blood pressure, diabetes status, potassium level and other health factors.

Control Blood Pressure

Maintaining blood pressure within the target recommended by the treating clinician can help reduce cardiovascular and kidney-related risks.

Certain blood-pressure medicines may also reduce albuminuria in appropriate patients.

Manage Diabetes

For patients with diabetes, individualized glucose management is an important component of kidney care.

Some kidney-protective medicines may be appropriate depending on kidney function and other clinical factors.

Reduce Protein Loss in Urine

Patients with significant albuminuria may benefit from medications that reduce albumin loss and protect kidney function when clinically appropriate.

Manage High Potassium

Stage 4 CKD can reduce the kidneys' ability to eliminate potassium.

If potassium becomes elevated, doctors may review:

• Medicines

• Diet

• Kidney function

• Acid-base status

• Other contributing factors

Treatment depends on the severity and cause of hyperkalemia.

Treat Anemia

Reduced kidney function can contribute to anemia.

Doctors may investigate iron status and other causes before deciding whether treatment such as iron supplementation or an erythropoiesis-stimulating agent is appropriate.

Manage Mineral and Bone Abnormalities

Calcium, phosphorus, parathyroid hormone and vitamin D-related factors may require monitoring in advanced CKD.

Treatment is individualized according to laboratory results.

Avoid Further Kidney Injury

Patients may be advised to avoid unnecessary use of medicines that can harm kidney function, particularly when dehydrated or medically unwell.

Never stop an essential prescription medicine without discussing it with the treating doctor.

Stage 4 Kidney Disease and Dialysis

One of the most common concerns after receiving a Stage 4 CKD diagnosis is:

“Will I need dialysis?”

Not necessarily.

Stage 4 CKD indicates severe reduction in kidney function, but dialysis is not started solely because the eGFR is between 15 and 29.

Dialysis decisions are based on the patient's overall clinical condition.

Doctors may consider kidney replacement therapy when there are complications such as:

• Persistent severe fluid overload

• Difficult-to-control potassium abnormalities

• Severe metabolic acidosis

• Symptoms attributable to kidney failure

• Uremic complications

• Progressive kidney failure with inadequate kidney function

Some patients remain stable in Stage 4 for a significant period, while others progress more quickly.

Preparing for Possible Dialysis

If kidney function continues to decline, early discussion about kidney replacement therapy can help patients understand their options.

Depending on the individual situation, planning may include:

• Hemodialysis education

• Peritoneal dialysis education

• Vascular access planning

• Evaluation for kidney transplantation

• Medication review

• Nutritional counselling

• Management of CKD complications

Preparing for dialysis does not mean that dialysis has to begin immediately.

Stage 4 CKD and Kidney Transplantation

For selected patients with progressive advanced kidney disease, transplant evaluation may be considered before kidney failure becomes established.

Kidney transplantation can provide kidney replacement for appropriately selected patients.

Evaluation generally considers:

• Overall health

• Cardiovascular status

• Cause of kidney disease

• Other medical conditions

• Infection screening

• Suitability for transplantation

A nephrologist and transplant team can explain whether transplantation may be appropriate.

Diet for 4th Stage Kidney Disease

There is no single Stage 4 CKD diet that is suitable for everyone.

Dietary recommendations may need to consider:

• Sodium intake

• Protein intake

• Potassium

• Phosphorus

• Fluid requirements

• Diabetes

• Blood pressure

• Nutritional status

Salt

Reducing excessive dietary sodium can support blood-pressure and fluid management.

Protein

Protein intake should be individualized.

Very high-protein diets and unnecessary protein supplements may not be appropriate for some people with advanced CKD.

At the same time, excessive protein restriction can contribute to malnutrition.

Potassium

Not every person with Stage 4 CKD needs a low-potassium diet.

Dietary potassium recommendations should depend on blood potassium levels, medications and kidney function.

Phosphorus

If phosphorus levels are elevated, dietary adjustments may be recommended.

Some patients may also require prescribed phosphate binders.

Fluids

Fluid requirements vary.

A person with Stage 4 CKD should not automatically drink excessive amounts of water. Those with swelling, reduced urine output or certain heart conditions may have specific fluid recommendations.

A renal dietitian can help create an individualized dietary plan.

Can Lifestyle Changes Help in Stage 4 CKD?

Lifestyle measures can support medical treatment.

Depending on individual health needs, these may include:

• Avoiding tobacco

• Maintaining a healthy body weight

• Staying physically active within appropriate limits

• Following the prescribed dietary plan

• Limiting excessive sodium

• Taking medicines as prescribed

• Attending regular laboratory monitoring

• Avoiding unverified supplements

• Managing diabetes and blood pressure

Lifestyle changes cannot replace medical treatment when significant kidney disease is present.

How Fast Does Stage 4 Kidney Disease Progress?

The rate of CKD progression differs considerably between individuals.

Factors that can influence progression include:

• Underlying kidney disease

• Degree of albuminuria

• Blood-pressure control

• Diabetes control

• Repeated episodes of acute kidney injury

• Smoking

• Cardiovascular disease

• Medication adherence

• Other health conditions

A single eGFR value cannot accurately describe how quickly a person's kidney function will change.

Monitoring the trend in eGFR and urine albumin over time provides more useful information.

Can Stage 4 Kidney Disease Become Stage 5?

Yes.

Stage 5 CKD is generally defined as an eGFR below 15 mL/min/1.73 m² when the condition is chronic.

However, moving from Stage 4 to Stage 5 does not occur at the same rate in every patient.

Some people remain relatively stable, while others experience progressive loss of kidney function.

Appropriate treatment and monitoring may help slow progression in many patients, depending on the underlying cause.

When Should Someone With Stage 4 CKD Contact a Doctor Urgently?

Urgent medical attention may be necessary if a person with advanced CKD develops:

• Very little or no urine

• Severe breathlessness

• Chest pain

• Severe swelling

• Confusion

• Persistent vomiting

• Severe weakness

• Fainting

• Rapid deterioration

These symptoms can have several causes and may indicate a serious complication requiring prompt assessment.

Why Regular Nephrologist Follow-Up Matters

Stage 4 CKD requires closer monitoring than earlier stages of chronic kidney disease.

A nephrologist may periodically review:

• Creatinine and eGFR

• Urine albumin

• Potassium

• Bicarbonate

• Hemoglobin

• Calcium and phosphorus

• Blood pressure

• Diabetes control

• Medication safety

• Symptoms and nutritional status

Regular follow-up also provides an opportunity to identify complications early and discuss dialysis or transplant planning when appropriate.

Stage 4 Kidney Disease Care at Prabhakar Bhurke Clinic

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized care for patients with advanced kidney disease.

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

• Confirmation and staging of CKD

• Review of eGFR and creatinine trends

• Urine albumin and protein assessment

• Blood-pressure management

• Diabetes-related kidney care

• Electrolyte and acid-base monitoring

• Anemia and mineral-bone disorder evaluation

• Medication review

• Dietary guidance

• Assessment of kidney disease progression

• Dialysis planning when appropriate

• Kidney transplant evaluation and related care

The treatment plan is based on the patient's underlying kidney condition, laboratory findings, symptoms and overall health.

Frequently Asked Questions

What is 4th stage kidney disease?

4th stage kidney disease usually refers to Stage 4 chronic kidney disease, characterized by a persistent eGFR of approximately 15 to 29 mL/min/1.73 m².

Is Stage 4 kidney disease serious?

Stage 4 CKD represents a significant reduction in kidney function and requires regular medical monitoring and management. However, it does not mean that dialysis must start immediately.

What are the symptoms of Stage 4 kidney disease?

Symptoms can include fatigue, swelling, changes in urination, nausea, itching, poor appetite, muscle cramps and breathlessness, although some people may have few symptoms.

Can Stage 4 kidney disease be cured?

Established chronic kidney damage generally cannot be completely reversed. However, treating the underlying disease and reversible complications may help preserve remaining kidney function.

Does everyone with Stage 4 CKD need dialysis?

No. Dialysis is based on symptoms, complications and the overall clinical condition rather than the CKD stage alone.

What should I eat with Stage 4 kidney disease?

Diet depends on potassium, phosphorus, protein needs, fluid status, diabetes, blood pressure and nutritional health. An individualized renal diet is preferable to following a generic restrictive diet.

Can Stage 4 CKD improve?

Kidney function may improve if an acute reversible problem is contributing to the deterioration. Established chronic kidney scarring generally does not simply return to normal.

Should I drink more water in Stage 4 kidney disease?

Not automatically. Fluid needs vary between patients. Excessive fluid intake can be harmful when fluid retention or reduced urine output is present.

When should I see a nephrologist for Stage 4 CKD?

A nephrologist should be involved in the management of Stage 4 CKD to evaluate the cause, monitor complications, optimize treatment and discuss kidney replacement options when appropriate.

Conclusion

4th stage kidney disease means that kidney filtration has become significantly reduced, generally corresponding to an eGFR of 15 to 29 mL/min/1.73 m² when the abnormality is chronic.

Although Stage 4 CKD is advanced kidney disease, it does not automatically mean that dialysis is required immediately. Management focuses on controlling the underlying cause, protecting remaining kidney function, treating complications and monitoring changes in eGFR and urine albumin.

Diet, blood-pressure management, diabetes control, medication review and regular nephrology follow-up can all form part of comprehensive care.

If you or a family member has been diagnosed with Stage 4 CKD, a personalized assessment can help clarify the cause, current kidney function, treatment priorities and whether planning for dialysis or transplantation is appropriate.

For specialized kidney care, consult Dr. Sandip Prabhakar Bhurke at Prabhakar Bhurke Clinic.

Medical Disclaimer

This article is intended for general educational and informational purposes only and should not be considered medical advice, diagnosis or treatment. Stage 4 kidney disease can have different causes and may progress differently from one person to another. An eGFR result must be interpreted in the context of previous results, urine findings, medical history and other laboratory tests. Do not start, stop or change prescription medicines, supplements, diet or fluid intake based solely on this article. Dialysis is not recommended solely because a patient has Stage 4 CKD and must be considered according to the overall clinical condition. Seek urgent medical attention for very little or no urine, severe breathlessness, chest pain, confusion, persistent vomiting, severe swelling, fainting or rapidly worsening symptoms. Consult Dr. Sandip Prabhakar Bhurke or another qualified nephrologist for individualized medical care.