Test Overview
Method
High performance liquid chromatography-Tandem mass spectrometry (HPLC-MS/MS)
Result Included
Warfarin
Aliases/Synonyms
Coumadin
Specimen
Specimen Type
Avoid gel-separator tubesSerum
Plasma
Containers
Preferred Containers
No Additive (Red Top)
Acceptable Containers
EDTA (Lavender-Top)
Volume
Sample Volume
1 mL
Minimum Volume
0.2 mL
Specimen Comment
Avoid gel-separator tubes.
Collection & Handling
Handling Information
Store and send cold or frozen.
Stability
| Ambient | Refrigerated | Frozen |
|---|---|---|
| 30 days | 30 days | 15 months |
Rejection Criteria
| Criteria | Specification |
|---|---|
| Specimen | Gel tube |
Performance & Interpretation
Turnaround Time
12 days
Results
Name
Units
Reference Range
Conversion
-
Warfarinmcg/mLReporting Limit: 0.2 mcg/mL. The reported value may vary based on dilution or weight of the specimen.
Referral Location
Out-of-Country
Interface & Setup
HL7 Interface Codes
| Order Code | Result Name | Result Codes | Units |
|---|---|---|---|
| WARFA SP | WARFARIN, SERUM/PLASMA | 64653 | mcg/mL |
Test Version
Last Updated
2022-10-04