Classification: Stage G5 — Kidney failure
eGFR 15 is kidney failure — the threshold where dialysis is typically considered. Urgent specialist care is required.
Estimated glomerular filtration rate — 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 — labs report eGFR automatically with any creatinine.
Reference: KDIGO CKD classification; CKD-EPI 2021 equation (NEJM 2021) • Normal range: ≥90 mL/min/1.73m² (declines with age)
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This content is a general reference, not medical advice, a diagnosis, or a treatment plan. Do not change your diet, fluids, medicines, or dialysis plan without your nephrologist or renal dietitian. Individual recommendations depend on your labs, medications, conditions, and care plan.