What causes eGFR 18 mL/min/1.73mÂ²?

Progressive chronic kidney disease

What should I do if my eGFR is 18?

Nephrology care every 1-3 months Vascular access planning (fistula takes months to mature) Watch for uremia symptoms — swelling, nausea, fatigue

Progressive chronic kidney disease

What should I do about eGFR 18?

Nephrology care every 1-3 months Vascular access planning (fistula takes months to mature) Watch for uremia symptoms — swelling, nausea, fatigue

eGFR — Stage G4

eGFR 18 mL/min/1.73mÂ²: What It Means

Classification: Stage G4

eGFR 18 is severe (stage G4) CKD — approaching the kidney-failure range. Dialysis planning should already be underway.

What can cause this?

Progressive chronic kidney disease

Your next steps

1Nephrology care every 1-3 months
2Vascular access planning (fistula takes months to mature)
3Watch for uremia symptoms — swelling, nausea, fatigue

About the eGFR test

Estimated glomerular filtration rate â€” the best overall measure of kidney function. It is calculated from creatinine, age, and sex (CKD-EPI 2021 equation) and used to stage chronic kidney disease.

Calculated from a serum creatinine blood test. No extra sample needed â€” labs report eGFR automatically with any creatinine.

Reference: KDIGO CKD classification; CKD-EPI 2021 equation (NEJM 2021) • Normal range: â‰¥90 mL/min/1.73mÂ² (declines with age)

Use the eGFR tool

Calculate and interpret your value properly

Other eGFR Values

90 mL/min/1.73mÂ² 75 mL/min/1.73mÂ² 60 mL/min/1.73mÂ² 55 mL/min/1.73mÂ² 50 mL/min/1.73mÂ² 45 mL/min/1.73mÂ² 40 mL/min/1.73mÂ² 35 mL/min/1.73mÂ² 30 mL/min/1.73mÂ² 25 mL/min/1.73mÂ² 20 mL/min/1.73mÂ² 15 mL/min/1.73mÂ²

This page is educational and not a diagnosis — interpret with your healthcare provider.

eGFR 18: Quick Answers

Kidney Function & eGFR

eGFR calculator (CKD-EPI 2021)eGFR decline & time-to-failure estimator Creatinine 1.3 — is it normal?eGFR 45 — what it means What is eGFR?Can kidney disease be reversed?

Dialysis Explained

CRRT vs dialysis vs SLED AEIOU dialysis indications Dialysis ICD-10 codes Dialyzer membranes explained Dialysis at home guide Dialysis bags (PD supplies)Dialysis at sea (cruising)

Keep learning about eGFR

Tool: eGFR Calculator (CKD-EPI 2021)Lab: eGFR 90 Lab: eGFR 75 Lab: eGFR 60 Topic: Kidney Diet Basics: Potassium, Phosphorus & Sodium Explained Topic: Protein in Urine: Causes and What It Means

eGFR — Stage G4

eGFR 18 mL/min/1.73mÂ²: What It Means

Classification: Stage G4

eGFR 18 is severe (stage G4) CKD — approaching the kidney-failure range. Dialysis planning should already be underway.

What can cause this?

Progressive chronic kidney disease

Your next steps

1Nephrology care every 1-3 months
2Vascular access planning (fistula takes months to mature)
3Watch for uremia symptoms — swelling, nausea, fatigue

About the eGFR test

Calculated from a serum creatinine blood test. No extra sample needed â€” labs report eGFR automatically with any creatinine.

Reference: KDIGO CKD classification; CKD-EPI 2021 equation (NEJM 2021) • Normal range: â‰¥90 mL/min/1.73mÂ² (declines with age)

Use the eGFR tool

Calculate and interpret your value properly

Other eGFR Values

This page is educational and not a diagnosis — interpret with your healthcare provider.

eGFR 18: Quick Answers

Kidney Function & eGFR

eGFR calculator (CKD-EPI 2021)eGFR decline & time-to-failure estimator Creatinine 1.3 — is it normal?eGFR 45 — what it means What is eGFR?Can kidney disease be reversed?

Dialysis Explained

CRRT vs dialysis vs SLED AEIOU dialysis indications Dialysis ICD-10 codes Dialyzer membranes explained Dialysis at home guide Dialysis bags (PD supplies)Dialysis at sea (cruising)

Keep learning about eGFR

Tool: eGFR Calculator (CKD-EPI 2021)Lab: eGFR 90 Lab: eGFR 75 Lab: eGFR 60 Topic: Kidney Diet Basics: Potassium, Phosphorus & Sodium Explained Topic: Protein in Urine: Causes and What It Means

eGFR 18 mL/min/1.73mÂ²: What It Means

What can cause this?

Your next steps

About the eGFR test

Other eGFR Values

eGFR 18: Quick Answers

Is eGFR 18 mL/min/1.73mÂ² normal?

What causes eGFR 18?

What should I do about eGFR 18?

Kidney Function & eGFR

Dialysis Explained

Keep learning about eGFR

eGFR 18 mL/min/1.73mÂ²: What It Means

What can cause this?

Your next steps

About the eGFR test

Other eGFR Values

eGFR 18: Quick Answers

Is eGFR 18 mL/min/1.73mÂ² normal?

What causes eGFR 18?

What should I do about eGFR 18?

Kidney Function & eGFR

Dialysis Explained

Keep learning about eGFR