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3001541
Warfarin Sensitivity (CYP2C9, CYP2C cluster, CYP4F2, VKORC1) Genotyping
WARF PAN
Ordering Recommendation
Use to identify individuals with inherited gene variants that affect dose requirements for warfarin.
New York DOH Approval Status
This test is New York state approved.
Specimen Required
Patient Preparation
Collect
Lavender (EDTA), pink (K2EDTA), or yellow (ACD solution A or B).
Specimen Preparation
Transport 3 mL whole blood. (Min: 1 mL)
Storage/Transport Temperature
Refrigerated.
Unacceptable Conditions
Plasma or serum. Specimens collected in sodium heparin or lithium heparin. Frozen specimens in glass collection tubes.
Remarks
Stability
Ambient: 72 hours; Refrigerated: 1 week; Frozen: 1 month
Methodology
Polymerase Chain Reaction (PCR)/Fluorescence Monitoring
Performed
Varies
Reported
5-10 days
Reference Interval
By report
Interpretive Data
Refer to report
Compliance Category
Laboratory Developed Test (LDT)
Note
Hotline History
Hotline History
Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
N/A
CPT Codes
81227; 81355; 81479
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 2008931 | CYP2C9 Phenotype | 79716-7 |
| 3001504 | CYP2C9 Genotype | 46724-1 |
| 3001542 | WARF PAN Specimen | 31208-2 |
| 3001543 | CYP4F2 Genotype | 93197-2 |
| 3001544 | VKORC1 Genotype | 101590-8 |
| 3001545 | WARF PAN Interpretation | 50398-7 |
| 3004499 | CYP2C Cluster Geno | 101785-4 |
| 3004500 | CYP2C Cluster Pheno | 81259-4 |
| 3004506 | CYP4F2 Phenotype | 81259-4 |
| 3004507 | VKORC1 Phenotype | 81259-4 |
| 3016870 | EER Warfarin Sensitivity Genotyping | 11526-1 |
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
- VKORC1
- CYP4F2
- CYP2C9
- warfarin
- Coumadin
- CYP2C cluster
Warfarin Sensitivity (CYP2C9, CYP2C cluster, CYP4F2, VKORC1) Genotyping
