Warfarin
Order Code: WARF
Epic Lab Code: LAB4274
Order Form: A-1a Miscellaneous Request or Epic Req
Commercial Mail-out Laboratory
6240 RCP
356-3527
Specimen:
Serum
Collection Medium:
Red top tube
Minimum:
Preferred Minimum: 3 mL serum Absolute Minimum: 1.1 mL serum
Rejection Criteria:
Gel separator tubes
Analytic Time:
1 week upon receipt at reference laboratory
Reference Range:
Therapeutic concentration: 2.0-5.0 mcg/mL Toxic concentration: > or =10.0 mcg/mL
Comments:
Patients transfused with fresh-frozen plasma may have a disparity between their warfarin level (elevated) and a relatively normal PT.
Methodology:
High-Pressure Liquid Chromatography (HPLC)
CPT Code:
82486