32242:CREATININE WITH GLOMERULAR FILTRATION RATE (GFR)

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32242:CREATININE WITH GLOMERULAR FILTRATION RATE (GFR)
Methodology: Colorimetry/Alkaline Picrate
Edit Date: 6/11/2010
Performed: Daily
Released: Same day as tested
CPT Code: 82565
Specimen Collection Details
Collection: One 7.5 mL serum separator tube (SST). Also acceptable: One 4 mL green top tube (heparin), one 4.5 mL light green plasma separator tube (PST), or one 4 mL lavender top tube (EDTA).
Handling: Centrifuge SST or PST within 2 hours of collection and transport in original tube. Centrifuge green top or lavender top tube within 2 hours of collection, separate plasma from cells into a plastic vial for transport. Refrigerate.
Stability: 6 days refrigerated.
Standard Volume: 2 mL serum or plasma
Minimum Volume: 0.5 mL serum or plasma
Transport: Refrigerated.
Rejection Criteria: Tubes other than those specified.