WARFARIN, SERUM/PLASMA

Test Documentation
Specimen Required
Draw blood in a plain red-top tube. Centrifuge, separate serum from cells, and send 2.0 mL serum (0.7 mL minimum) refrigerated in a screw-capped plastic vial.

Alternate Specimen
Plasma: Lavender EDTA

Rejection Criteria
SST, PST

Methodology
High Performance Liquid Chromatography (HPLC)

Stability
Room temperature: 14 days; Refrigerated: 14 days; Frozen: 3 months

Reference Range
By report

Performed
Thursday

Turnaround Time3-8 days
Test CodeWAR
CPT-4 Code (s)
80375 (80299)
LOINC Codes
4098-0

Warde
Medical
Laboratory