Test Directory
CYSTATIN C (STC)
Department: Chemistry
Test Synonym(s): STC
Test Components: Cystatin C
CPT Codes: 82610
Methodology: Turbidimetric Immunoassay
Reference Range: 0-3 mo 0.5-2.0; 4-12 mo 0.5 - 1.5, 1-17 yr 0.5 - 1.0; Adult 0.5-1.1 mg/L
Tube Type: Light Green PST (Lithium Heparin with gel)-4.5 mL; EDTA
Specimen: Plasma; EDTA with or without gel; Serum with or without clot activator
Alternate Specimen: Red top tube-5 mL
Pediatric Requirements: Green or red microtainer plasma
Volume: 4.5 mL plasma
Minimum Volume: 100 mcL plasma
Temperature: Separate from cells, ambient 24hrs
Stability: Separated plasma or serum 7 days refrigerated; 6 months -20C
Reasons for Rejection: EDTA, fluoride oxalate or citrated collection
Days Performed: Sun-Sat
Times Performed: Continuous
TAT: 4 hours
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