| Ordering Code | 6422 |
|---|---|
| Test Name | Cystatin C with eGFR |
| Alias | Cystatin C with GFR, Estimated Cystatin C with Glomerular Filtration Rate, Estimated (eGFR) |
| Preferred Specimen | Serum |
| Preferred Container | SST (Gold) |
| Other Specimen/Container | Serum in Plain (Red), Plasma in Lithium Heparin (Green-PST), Plasma in Lithium Heparin (Dark Green-PP No Gel) |
| Optimum Volume | 1 mL |
| Transport Requirements | Oahu: Ambient Airline: Ambient |
| Specimen Stability | Ambient: 26 Days Refrigerated: 26 Days Frozen: 5 Years |
| Rejection Criteria | Specimen older than stability limits |
| Avail. Stat | NO |
| Analytic Time | 1 Day |
| Methodology | Immunoturbidimetric |
Reference range(s)
The reference ranges listed below are valid on this date of November 7, 2025.
| Component | Age | Male Norm | Male Critical Low | Male Critical High | Female Norm | Female Critical High | Female Critical Low | Units | Add'l info |
|---|---|---|---|---|---|---|---|---|---|
| Cystatin C | ALL | 0.60 - 0.97 | 0.60 - 0.97 | mg/L | |||||
| eGFR CKD-EPI Cys 2012 | ALL | >=90 | >=90 | mL/min/1.73m2 | |||||
| eGFR CKD-EPI Cys 2012 M | ALL | >=90 | mL/min/1.73m2 | ||||||
| eGFR CKD-EPI Cys 2012 F | ALL | >=90 | >=90 | mL/min/1.73m2 |
