Kidney
Cystatin C
Cystatin C is produced by all nucleated cells at a constant rate and filtered by the kidneys. Unlike creatinine, it is not affected by muscle mass, diet, or exercise, making it a more accurate marker of kidney function.
What It Measures
Glomerular filtration rate — how well your kidneys filter blood.
Reference Ranges
| Status | Range (mg/L) |
|---|---|
| Optimal | 0.55–0.85 mg/L |
| Normal | 0.55–1.0 mg/L |
| Borderline | 1.0–1.3 mg/L |
| Out of Range | > 1.3 mg/L |
How GATOR Tracks This
Lab Providers
Function HealthLabCorp
Related Clinical Ratios
eGFR
Related Biomarkers
This content is for informational purposes only and does not constitute medical advice. Reference ranges may vary by laboratory and individual factors. Consult a qualified healthcare provider for interpretation of your results and treatment decisions.
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