Cystatin C with Estimated GFR, Serum
Methodology:
Performed:
Analytical Time:
Testing Laboratory:
Laboratory Section:
Cystatin C with Estimated GFR, Serum
Preferred Collection Container:
Light Green (Lithium Heparin Plasma Separator Tube)
SST (Serum Separator)
Also Acceptable Collection Container:
Red (No Additive)
Green No Gel (Lithium Heparin)
Collection Information:
Collect blood in a plasma or serum separator tube (green or red top also acceptable).
Capillary blood collections are unsuitable for use in this assay. Cystatin C concentrations were significantly lower in capillary samples compared to venous blood samples.
Transport Information:
0.5 mL of refrigerated serum in a transport tube.
Minimum Sample Volume: 
0.2 mL of serum or plasma (approximately 0.5 mL of whole blood based upon normal patient hematocrit)
Unacceptable Conditions:
Stability Comments:
1. Serum gel tubes should be centrifuged within 2 hours of collection.
2. Red-top tubes should be centrifuged and aliquoted within 2 hours of collection.
Stability
Refrigerated Stability:
Frozen Stability:
Ambient Stability:
Cystatin C with Estimated GFR, Serum
Sunquest Order Code:
Epic Number: CPT Code:
Cystatin C with Estimated GFR, Serum
Modified: