Collect: Serum separator tube or plasma separator tube. Also acceptable: Green (sodium or lithium heparin).
Specimen Preparation: Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.5 mL)
Storage/Transport Temperature: Refrigerated.
Unacceptable Conditions: Specimens collected in EDTA. Hemolyzed specimens.
Stability (collection to initiation of testing): After separation from cells: Ambient: 8 days; Refrigerated: 8 days; Frozen: 6 months