Kidney Function Tests (eGFR and Creatinine), Explained
Quick Answer (TL;DR)
Creatinine is a waste product your kidneys clear. eGFR uses it to estimate how well your kidneys filter, in millilitres per minute.
What It Means
An eGFR of 90 or above is generally normal, and below 60 sustained for three months or more defines chronic kidney disease. A urine albumin-to-creatinine ratio adds information about kidney damage even when eGFR is normal.
Why It Matters for Your Health
Kidney function declines quietly. Catching it early changes medication choices, blood pressure targets and the pace of decline, and reduces cardiovascular risk.
Recommended Biomarker or Metric to Track
Keep eGFR and any urine protein results together over time.
Questions to Ask Your Doctor
Targeted questions based on latest clinical consensus statements.
Suggest a Medical or Clinical Correction
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