Laboratory Test DirectoryShare
Cystatin C, Serum
The measurement of cystatin C is used in the diagnosis and treatment of renal diseases.
Serum sample from human is mixed with cystatin C immunoparticles. Cystatin C from the sample and anti cystatin C from the immunoparticles aggregates. The complex particles created absorb light, and by turbidimetry the absorption is related to cystatin C concentration via interpolation on an established standard calibration curve.
Collect: Serum Separator Tube (SST) OR RED Top Tube- 0.5 ml
Specimen preparation: Serum free from hemolysis is the recommended specimens. Allow blood samples to clot (15 mins). Separate the serum from the cells by centrifuging for 10 minutes. Store serum at 2-8°C until analysis.
Stability: Cystatin C in serum samples are stable for 6 days at room temperature (18 - 25°C) or 26 days if stored at 2 - 8°C. Additionally, it has been published that samples can be stored below -20°C for up to 10 years.
At Accu Reference: Refrigerated - 7 days: Frozen- 1 month
NOTE: * This test is approved for all states. *
Accu Reference Medical Laboratory
0.53 – 1.01 mg/L
The measuring range of cystatin C for the assay is approximately 0.4 - 8.0 mg/L. Samples with values above the upper limit are reported as greater than.