Collect: Plain red, gray (sodium fluoride/potassium oxalate), green (sodium heparin), lavender (EDTA), or pink (K2 EDTA).
Specimen Preparation: Separate serum or plasma from cells within two hours of collection. Transfer 2 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.7 mL)
Storage/Transport Temperature: Refrigerated. Also acceptable: Room temperature or frozen.
Unacceptable Conditions: Separator tubes.
Stability (collection to initiation of testing): Ambient: 2 weeks; Refrigerated: 2 weeks; Frozen: 2 weeks
Reference Interval:
By report
CPT Code(s):
80299
Cross References:
Anticoagulants, Oral (Warfarin, Serum or Plasma), Coumadin (Warfarin, Serum or Plasma), Jantoven (Warfarin, Serum or Plasma), Panwarfarin (Warfarin, Serum or Plasma), Sodium Warfarin (Warfarin, Serum or Plasma)
