Warfarin, Serum or Plasma


Sunquest Code:WARFN  
Epic Code:LAB6069Epic Name:Warfarin Level
Synonyms:Coumadin
Methodology:High performance liquid chromatography/Tandem mass spectrometry
Turnaround Time:Specimens are sent to the reference laboratory Mon-Sat; results are reported within 8-11 days.


Collection Instructions

Specimen:Blood
Optimal Volume:2 mL
Minimum\Peds Volume:0.6 mL
Container:Red (no gel) (Purple (EDTA))
Causes for Rejection:Use of serum separator tubes.


Processing and Shipping

Specimen Processing:Centrifuge and aliquot 1 mL; 0.2 mL minimum serum or plasma. Store at refrigerated temperature. Test is not performed at ARUP; separate specimens must be submitted when multiple tests are ordered.
Shipping Instructions:Ship at refrigerated temperature.
Stability:1 month at room temperature or refrigerated; 15 months frozen.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:90805


Interpretive

Reference Range:By report.


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