The phrase “4th stage kidney failure” is commonly used by patients to describe Stage 4 chronic kidney disease (CKD).

Medically, Stage 4 CKD means that kidney filtration is severely reduced, with an eGFR generally between 15 and 29 mL/min/1.73 m². It is an advanced stage of CKD, but it is not the same as kidney failure or Stage 5 CKD. Stage 5 corresponds to an eGFR below 15.

At Stage 4, the kidneys may still perform enough function to avoid dialysis in many patients. However, the risk of complications and progression toward kidney failure is substantially higher, so regular nephrology follow-up and forward planning become particularly important.

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

Stage 4 CKD eGFR: What Does 15 to 29 Mean?

The estimated glomerular filtration rate (eGFR) is an estimate of how efficiently the kidneys filter blood.

The CKD G4 category is:

eGFR 15–29 mL/min/1.73 m²

This represents severely decreased kidney function.

However, an eGFR value should not be interpreted in isolation.

A nephrologist may also consider:

• Whether the eGFR is stable or falling

• Urine albumin levels

• Underlying cause of CKD

• Blood pressure

• Diabetes

• Potassium

• Bicarbonate

• Hemoglobin

• Fluid status

• Cardiovascular health

• Other medical conditions

A single eGFR result therefore does not provide a complete picture of a person's kidney health.

Is Stage 4 CKD the Same as Kidney Failure?

No.

Stage 4 CKD is an advanced stage immediately before the kidney-failure range.

CKD category	eGFR
G1	≥90
G2	60–89
G3a	45–59
G3b	30–44
G4	15–29
G5	<15

Importantly, G1 and G2 require evidence of kidney damage for at least three months to meet the definition of CKD; eGFR alone in those ranges does not establish CKD.

Stage 4 indicates severe loss of kidney function, but it does not automatically mean dialysis is required.

What Causes Stage 4 Kidney Disease?

Stage 4 CKD can develop from many different kidney conditions.

Common causes include:

Diabetes

Long-standing diabetes can damage the kidney's filtering structures and contribute to progressive CKD.

High Blood Pressure

Persistent hypertension can damage blood vessels in the kidneys and accelerate kidney-function decline.

Glomerular Diseases

Conditions affecting the kidney's filtering units can cause proteinuria, hematuria and progressive loss of kidney function.

Polycystic Kidney Disease

Inherited kidney disorders such as autosomal dominant polycystic kidney disease can progressively reduce kidney function.

Recurrent Obstruction or Stones

Repeated obstruction, complicated urinary stones or other structural problems may contribute to chronic kidney damage.

Other Kidney Conditions

Autoimmune diseases, inherited disorders, recurrent kidney injury, infections and medication-related kidney damage can also contribute to CKD.

Identifying the underlying cause is important because treatment may differ substantially from one patient to another.

What Are the Symptoms of 4th Stage Kidney Failure?

Some people with Stage 4 CKD may still have relatively few symptoms.

As kidney function becomes more impaired, possible symptoms include:

• Swelling of the legs, ankles, feet or face

• Fatigue

• Reduced appetite

• Nausea

• Vomiting

• Itching

• Muscle cramps

• Sleep problems

• Changes in urination

• Foamy urine

• Difficulty concentrating

• Breathlessness

Advanced CKD can also cause complications such as anemia, electrolyte abnormalities, metabolic acidosis and mineral-bone disorders.

Symptoms vary considerably, which is why blood and urine testing remains important even when a patient feels reasonably well.

Why Can Stage 4 CKD Have Few Symptoms?

Kidney disease can progress gradually, allowing the body to adapt to declining kidney function.

As a result, some people may not realize that their kidney function has become severely reduced until blood or urine testing identifies the problem.

NIDDK notes that many people have no symptoms until CKD becomes advanced.

This is one reason patients with known CKD should not wait for severe symptoms before attending follow-up appointments.

How Is Stage 4 Kidney Disease Diagnosed?

Diagnosis and monitoring generally involve more than measuring creatinine.

Kidney Function Tests

Doctors may monitor:

• Serum creatinine

• eGFR

• Blood urea

The trend over time can be particularly useful for understanding whether kidney function is stable or declining.

Urine Albumin

A urine albumin-to-creatinine ratio (UACR) can identify and quantify albumin leakage.

Albuminuria provides important information about kidney damage and future kidney-failure risk.

Blood Tests

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

• Potassium

• Sodium

• Bicarbonate

• Hemoglobin

• Calcium

• Phosphorus

• Blood glucose or HbA1c

Blood Pressure

Blood-pressure monitoring is an important part of Stage 4 CKD management because uncontrolled hypertension can contribute to further kidney damage.

Imaging

Ultrasound or other imaging may be required when doctors need to investigate:

• Urinary obstruction

• Kidney stones

• Cysts

• Structural abnormalities

• Kidney size

Why Is Albuminuria Important in Stage 4 CKD?

Kidney function is assessed using eGFR, but albuminuria adds important information about kidney damage and risk.

KDIGO classifies albuminuria into:

• A1: less than 30 mg/g

• A2: 30–299 mg/g

• A3: 300 mg/g or more

The combination of eGFR and albuminuria helps clinicians assess kidney disease risk more accurately than either measurement alone.

Therefore, a patient with Stage 4 CKD should generally have urine albumin monitored when clinically appropriate.

Can Stage 4 Kidney Disease Be Treated?

Yes.

Although established chronic kidney damage is generally not simply reversible, Stage 4 CKD can still be actively managed.

Treatment aims to:

• Slow further loss of kidney function

• Control blood pressure

• Manage diabetes

• Reduce significant albuminuria when appropriate

• Treat anemia and mineral-bone complications

• Manage potassium and acid-base abnormalities

• Reduce cardiovascular risk

• Avoid additional kidney injury

• Prepare for possible kidney replacement therapy when appropriate

NIDDK emphasizes blood-pressure control, glucose management, appropriate medicines, nutrition and monitoring as important components of CKD management.

Can Stage 4 CKD Improve?

The answer depends on what is causing the decline.

Established chronic kidney scarring usually cannot simply be reversed.

However, kidney function can sometimes improve from a temporary deterioration caused by an additional problem.

For example:

• Dehydration

• Infection

• Urinary obstruction

• Certain medications

• Acute kidney injury

may temporarily worsen kidney function.

Treating the additional problem can sometimes bring kidney function back toward the person's previous baseline.

Therefore, a sudden creatinine increase in someone with Stage 4 CKD should be medically assessed rather than automatically assumed to represent permanent progression.

Does Everyone With Stage 4 CKD Need Dialysis?

No.

Stage 4 CKD does not automatically mean that dialysis must start.

Dialysis is generally considered when kidney failure develops and complications or symptoms cannot be adequately controlled with medical treatment.

NIDDK notes that kidney replacement therapy becomes relevant when kidney function reaches the kidney-failure range, while treatment decisions depend on the clinical situation.

For many people with Stage 4 CKD, the immediate focus is on controlling complications and slowing progression while also preparing for possible future treatment.

When Should Dialysis Planning Start in Stage 4 CKD?

Stage 4 is an important time to begin discussing future kidney replacement options.

KDIGO recommends considering education about kidney replacement therapy and planning according to kidney-failure risk, eGFR and other clinical factors. For people with advanced CKD, preparation can include discussion of dialysis modalities, vascular access and transplantation.

Planning early can provide time to:

• Understand hemodialysis

• Learn about peritoneal dialysis

• Discuss home-based treatment options where available

• Consider vascular access planning

• Explore kidney transplant evaluation

• Discuss conservative kidney management

• Arrange nutritional support

• Prepare psychologically and practically for future treatment

Planning does not mean that dialysis has to begin immediately.

What Are the Treatment Options If Kidney Failure Develops?

If kidney function eventually progresses to kidney failure, treatment choices may include:

Hemodialysis

Blood passes through a dialysis machine and filter to remove waste products and excess fluid.

Peritoneal Dialysis

The lining of the abdomen is used as a natural filtering membrane.

Kidney Transplantation

A functioning donor kidney may provide kidney function for appropriately selected patients.

Conservative Kidney Management

Some patients may choose comprehensive medical care without dialysis or transplantation.

Conservative management focuses on symptom control, managing complications, maintaining quality of life and preserving remaining kidney function for as long as possible.

The appropriate option depends on the patient's medical condition, preferences and overall circumstances.

Stage 4 CKD Diet: What Should You Eat?

There is no single diet that is appropriate for every Stage 4 CKD patient.

Dietary recommendations may depend on:

• Potassium level

• Phosphorus level

• Protein intake

• Sodium intake

• Diabetes

• Nutritional status

• Fluid balance

• Other medical conditions

A nephrologist or renal dietitian may recommend limiting excessive sodium and making individualized changes to protein, potassium, phosphorus and fluid intake.

Avoid extreme diets or unnecessary protein restriction without professional guidance.

How Much Water Should You Drink With Stage 4 CKD?

Fluid requirements vary.

Some people with Stage 4 CKD can drink normally, while others may develop fluid retention and require a fluid restriction.

Factors that affect fluid recommendations include:

• Urine output

• Swelling

• Heart function

• Blood pressure

• Sodium level

• Kidney function

• Diuretic treatment

Therefore, drinking excessive amounts of water is not a treatment for Stage 4 CKD.

Follow the fluid plan recommended by your healthcare professional.

How Can Stage 4 Kidney Disease Progression Be Slowed?

The approach depends on the cause, but important areas of care may include:

Control Blood Pressure

Blood-pressure management is one of the central components of CKD care.

Manage Diabetes

For patients with diabetes, appropriate glucose control can help reduce kidney and cardiovascular complications.

Manage Albuminuria

Certain kidney-protective medicines may reduce albuminuria and slow CKD progression in appropriate patients.

Avoid Unnecessary Kidney-Harming Medicines

Some medications can affect kidney function, particularly in susceptible patients.

Always discuss regular painkiller use, supplements and over-the-counter products with your doctor.

Treat Acute Kidney Problems Promptly

Infection, dehydration, obstruction or other acute illnesses can cause additional kidney injury.

Attend Regular Monitoring

Changes in creatinine, eGFR, urine albumin, potassium and other measurements can help guide treatment.

Can Stage 4 CKD Become Stage 5?

Yes, some patients with Stage 4 CKD eventually progress to Stage 5.

However, progression is not inevitable or identical for everyone.

KDIGO recommends considering kidney-failure risk in addition to eGFR and albuminuria when planning care. Risk can also be influenced by the underlying cause and other health conditions.

Some patients remain relatively stable for prolonged periods, while others experience faster decline.

This is why monitoring the trajectory of kidney function is more informative than focusing on one laboratory value.

What Can Make Stage 4 CKD Worse?

Factors that may contribute to further kidney injury include:

• Poorly controlled blood pressure

• Poorly controlled diabetes

• Significant persistent albuminuria

• Recurrent acute kidney injury

• Urinary obstruction

• Certain medications

• Smoking

• Cardiovascular disease

• Untreated underlying kidney disease

Not every factor applies to every patient.

The nephrologist can identify which risks are relevant and develop an individualized management plan.

Stage 4 CKD and Anemia

Anemia becomes more common as CKD becomes advanced.

The kidneys contribute to production of erythropoietin, a hormone involved in red-blood-cell production.

A patient with Stage 4 CKD may therefore be evaluated for:

• Hemoglobin

• Iron status

• Nutritional factors

• Other causes of anemia

Treatment depends on the cause and severity rather than simply treating every low hemoglobin value in the same way.

Stage 4 CKD and High Potassium

Advanced CKD can reduce the kidneys' ability to maintain normal potassium levels.

High potassium can become dangerous when severe.

Doctors may therefore monitor potassium regularly and review:

• Medicines

• Diet

• Kidney function

• Acid-base balance

• Other contributing conditions

Do not make major dietary potassium restrictions without medical advice because nutritional requirements vary.

Stage 4 CKD and Bone-Mineral Problems

Advanced CKD can affect the body's regulation of calcium, phosphorus and parathyroid hormone.

Doctors may monitor:

• Calcium

• Phosphorus

• Parathyroid hormone when appropriate

• Vitamin D status when clinically indicated

Management is individualized according to laboratory findings and the patient's overall condition.

When Should Someone With Stage 4 CKD See a Nephrologist?

A nephrologist should generally be involved in the care of advanced CKD.

Specialist assessment is particularly important when there is:

• eGFR between 15 and 29

• Rapidly declining kidney function

• Significant albuminuria

• Difficult-to-control hypertension

• Recurrent acute kidney injury

• Persistent high potassium

• Metabolic acidosis

• Anemia or mineral-bone complications

• Uncertain cause of CKD

• Need to plan kidney replacement therapy

KDIGO identifies CKD G4–G5 as stages where complications become more common and multidisciplinary care may be particularly useful.

When Is Stage 4 CKD an Emergency?

Stage 4 CKD itself is not necessarily an emergency.

However, urgent medical attention is required if a patient develops symptoms suggesting a serious complication, such as:

• Severe breathlessness

• Chest pain

• Confusion or markedly reduced alertness

• Very little or no urine

• Rapidly increasing swelling

• Persistent vomiting

• Severe weakness

• Symptoms associated with severe electrolyte abnormalities

• Rapid deterioration in health

These symptoms can have several causes and require prompt clinical assessment.

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 chronic kidney disease.

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

• Stage 4 CKD assessment

• Creatinine and eGFR trend monitoring

• Urine albumin assessment

• Blood-pressure management

• Diabetes-related kidney care

• Electrolyte monitoring

• Anemia evaluation

• Mineral and bone disorder assessment

• Medication review

• Identification of reversible kidney injury

• Dialysis education and future planning

• Kidney transplant-related evaluation

• Long-term nephrology follow-up

Treatment is based on the cause of kidney disease, current kidney function, complications and the patient's overall health.

Frequently Asked Questions

What does 4th stage kidney failure mean?

The term usually refers to Stage 4 chronic kidney disease, in which eGFR is between 15 and 29 mL/min/1.73 m². It represents severe kidney-function reduction but is not the same as Stage 5 kidney failure.

What are the symptoms of Stage 4 kidney disease?

Possible symptoms include swelling, fatigue, poor appetite, nausea, itching, muscle cramps, changes in urination, difficulty concentrating and breathlessness. Some people may have few symptoms.

Does Stage 4 kidney disease require dialysis?

Not automatically. Many patients with Stage 4 CKD are managed without dialysis while complications are treated and kidney function is monitored. Dialysis is considered when kidney failure and its complications require kidney replacement therapy.

Can Stage 4 CKD be reversed?

Established chronic kidney damage is generally not completely reversible. However, kidney function can sometimes improve if a reversible problem such as dehydration, infection, obstruction or acute kidney injury is treated.

What is the eGFR for Stage 4 kidney disease?

Stage 4 CKD corresponds to an eGFR of 15–29 mL/min/1.73 m².

Can Stage 4 CKD become Stage 5?

Yes, progression can occur, but it does not happen at the same rate in every patient. Underlying cause, albuminuria, eGFR trend and other health factors influence risk.

Should a Stage 4 CKD patient see a nephrologist?

Yes. Stage 4 represents advanced kidney disease, and nephrology follow-up can help monitor complications, manage risk factors and plan future treatment options when appropriate.

Should dialysis planning begin during Stage 4?

Dialysis education and future planning may be appropriate during Stage 4, particularly when kidney-failure risk is increasing. Early preparation can help avoid an emergency start if kidney replacement therapy eventually becomes necessary.

Conclusion

4th stage kidney failure, more accurately described as Stage 4 chronic kidney disease, means that kidney function is severely reduced, with an eGFR of approximately 15 to 29 mL/min/1.73 m². It is an advanced stage of CKD, but it does not automatically mean that dialysis is required.

Management at this stage focuses on identifying the cause of CKD, slowing further progression, controlling blood pressure and diabetes, managing complications, monitoring kidney function and preparing for possible future kidney replacement therapy when appropriate.

Stage 4 CKD should not be managed through home remedies or by waiting for severe symptoms. Regular nephrology follow-up can help identify changes in kidney function and address complications early.

For specialized evaluation and individualized management of Stage 4 kidney disease, 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. “4th stage kidney failure” is commonly used to describe Stage 4 chronic kidney disease, which corresponds to an eGFR of 15–29 mL/min/1.73 m². Stage 4 CKD is not automatically the same as kidney failure requiring dialysis. Individual treatment depends on the underlying cause, kidney-function trend, albuminuria, symptoms, laboratory abnormalities and overall health. Do not start, stop or change medicines, diet, fluid intake or dialysis planning based solely on this article. Seek urgent medical attention for severe breathlessness, chest pain, confusion, very little or no urine, rapidly increasing swelling, persistent vomiting or sudden deterioration. Consult Dr. Sandip Prabhakar Bhurke or another qualified nephrologist for personalized evaluation and treatment.