Collect: Serum 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: 0.4 mL)
Storage/Transport Temperature: Refrigerated.
Unacceptable Conditions: Specimens collected in lavender (EDTA) or pink (K2EDTA). Grossly hemolyzed specimens.
Stability (collection to initiation of testing): After separation from cells: Ambient: 48 hours; Refrigerated: 1 week; Frozen: 2 months
Reference Interval:
Age
Male
Female
1-30 days 31-364 days 1-3 years 4-6 years 7-9 years 10-12 years 13-15 years 16-17 years 18 years and older
