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Methodology:Radioimmunoassay (RIA)
Edit Date:10/20/2009
Released:2-8 days after setup at PeaceHealth Laboratories’ reference lab.
CPT Code:83519-90
Specimen Collection Details
Collection:One 7.5 mL serum separator tube (SST) or one 5 mL red top tube. Patient should fast 12 hours prior to draw. Protect specimen from light.
Handling:Allow to clot, centrifuge and immediately separate serum from cells and pour into a plastic vial. Protect from light by wrapping in foil. Freeze. CRITICAL FROZEN. Send separate specimen when multiple tests are ordered.
Stability:1 month frozen. Unstable ambient or refrigerated.
Standard Volume:2 mL serum
Minimum Volume:0.5 mL serum
Transport:Frozen on dry ice.
Rejection Criteria:Specimen not protected from light; lipemic or grossly hemolyzed specimen
Reference Range:
4.0-16.8 nmol/L (to convert to ng/mL, divide nmol/L by 3.95)