# eGFR Creatinine-Cystatin C Calculation

> This test calculates how well your kidneys filter waste from your blood by combining measurements of two specific markers, creatinine and cystatin C. Because cystatin C is less affected by muscle mass than creatinine, using both markers provides a more accurate estimate of your kidney function.

- Labcorp code: 121022
- Category: [Heart & Metabolic](https://picardo.health/labs/tests/heart-metabolic.md)
- Sample: blood
- Labcorp turnaround: 2–5 days
- Collection: free at a Labcorp location, or $75.00 at home.
- Without a doctor: yes. People order it themselves, with no doctor's visit or referral.
- Price: shown on the review page its order link opens. Opening it orders nothing.
- Order link: https://app.picardo.health/labs/order?tests=121022&ref=assistant

## Results reported (4)

- Creatinine
- eGFR
- Cystatin C
- eGFR Creat-Cyst C

## About ordering

People order for themselves, with no doctor's visit or referral, and results arrive in their Picardo account. Ordering is open to adults 18 and over in the US, except New York, New Jersey, Rhode Island, Pennsylvania, Maryland, Massachusetts, Hawaii and Maine. General health information, not medical advice.