Estimated Glomerular Filtration Rate (eGFR) Blood Test

Measures a calculated estimate of kidney filtration rate, derived from creatinine.

Measures

A calculated estimate of kidney filtration rate, derived from creatinine.

Why it matters

EGFR converts a creatinine result into an estimate of how much blood the kidneys are filtering per minute, adjusted for age and sex.

The word "estimated" is doing real work. It's a calculation based on creatinine, so it inherits creatinine's limitations — muscle mass affects it, and it's less reliable at the extremes of body composition.

Suits

People monitoring kidney function with a practitioner.

Your next step

Once you have your results, book with a Canwell naturopath, nutritionist or practitioner to talk them through and build a wellness plan that suits you. Book with Canwell