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Cystatin C

Item Value
Available Stat? No
Test code CYSTC
Performed by Quest
Sendout? yes
Method Spectrophotometric
Container type Red top, Gold top or Dark green top
Amount to Collect 2 mL blood
Sample type Serum or plasma
Preferred volume 1 mL serum or plasma
Min. Volume 0.5 mL serum or plasma
Processing notes Centrifuge and separate plasma or serum. Refrigerate
Units mg/L
Normal range
Cystatin C 0.50-1.00 mg/L
eGFR (cys) ≥ 60 mL/min/1.73m2
Stability Room temperature 1 day, refrigerated 1 week, frozen 3 months
Turn around times 6-12 days
Additional information Cystatin C is a highly sensitive and specific marker of glomerular filtration rate (renal function). Cystatin C is independent of muscle mass, age, and body mass index. Cystatin C is also used to assess renal allograft function

Result includes calculated eG+FR based on Cystatin C level.
CPT coding 82610-90
Last Updated 8/7/2014 9:51:17 AM
Entry Number 1570
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