Cystatin C, Serum with Reflex to Estimated Glomerular Filtration Rate (eGFR) CYSTAT
| Method(s) | Quantitative Nephelometry |
|---|---|
| Specimen Required | |
| Collect | 5 mL gold (SST), plasma separator (PST), or green (Lithium or Sodium Heparin) top tube. |
| Transport | Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Transfer 1 mL serum or plasma (Min: 0.4 mL) |
| Stability | After separation from cells: Ambient: Unacceptable; Refrigerated: 1 week; Frozen: 3 months |
| Unacceptable Conditions | Grossly hemolyzed specimens. |
| Schedule | Daily |
| Billing Code | 5011893 |
| CPTCode | 82610 |
| Preferred Specimen Collection Device(s) | |
