ARUP's Laboratory Test Directory

Warfarin, Serum or Plasma : 0090805

Mnemonic: WARF SP

Methodology: High Performance Liquid Chromatography
Performed: Varies
Reported: Varies
Specimen Required: Collect:  One 7 mL plain red, gray (sodium fluoride/potassium oxalate), green (sodium heparin), lavender (EDTA), or pink (K2 EDTA).

Storage/Transport Temperature:  2 mL serum or plasma at 20-25°C.  (Min: 0.5 mL)  Submit specimen in an ARUP Standard Transport Tube.

Unacceptable Conditions:  Separator tubes.

Stability (collection to initiation of testing):  Ambient: 2 weeks; Refrigerated: 2 weeks; Frozen: 18 months
Reference Interval:
By report
CPT Code(s): 80299
Cross References: Coumadin
 
 

 

 

 
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