Creatinine

Creatinine is a muscle-metabolism byproduct filtered by the kidneys, and the number used — alongside age and sex — to estimate eGFR.

SomaZeus display band

For care decisions, use the interval printed by the reporting lab and ask your clinician. Labs, assay methods, and individual context vary; the numbers below are SomaZeus display guidance.

Male: 0.7–1.3 mg/dL
Female: 0.6–1.1 mg/dL

Watch points

Watch point 1: at or above 2 mg/dL
Watch point 2: at or above 1.5 mg/dL

SomaZeus uses the same watch points for men and women in this display.

Why hard-training athletes watch it

Muscle mass, hydration, diet, supplements, kidney function, and lab method may all affect interpretation. A result should not be dismissed as an athletic baseline without clinician review.

When to retest

Ask your clinician whether a repeat or another measure is appropriate and how to prepare for a comparable draw.

Talk to your clinician

Bring creatinine, eGFR, the reporting lab interval, symptoms, and prior results to your clinician for interpretation together.