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Cystatin C

technique

1 creator use or recommend it

▲ 1 active in the last 90 days

1 recommend
Last discussed Sep 7, 2026

A blood biomarker used to assess kidney function, considered superior to creatinine for estimating glomerular filtration rate (GFR).

How Cystatin C compares

1 creator weighed in
Function Health Different focus
comprehensive blood testing platform

Peter says Cystatin C is far superior to creatinine for tracking kidney health. Function Health is a broader lab testing service.

1 creator
Peter Attia

"In our patients, we're very aggressive about checking a biomarker called cystatin C, which we think is far superior to creatinine as a way to keep tabs on their kidney function."

Superior to creatinine as a kidney function biomarker

What creators say

Peter Attia
recommends
Used for: Monitoring kidney function in patients with hypertension or at risk of renal decline Praised: Far superior to creatinine for tracking kidney function vs: Superior to creatinine as a kidney function biomarker

"In our patients, we're very aggressive about checking a biomarker called cystatin C, which we think is far superior to creatinine as a way to keep tabs on their kidney function."

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