Test Overview
Test Methodology
Real-Time Polymerase Chain Reaction (PCR) with Allelic Discrimination Analysis
Test Usage
This test is used for identifying patients who may require warfarin (Coumadin) dosing adjustments including: patients who are receiving warfarin for the first time; patients who have required multiple dosing adjustments to maintain the international normalized ratio (INR) in the target range; and patients with a history of thrombosis or bleeding when taking warfarin.
Reference Range *
Interpretive report provided.
Test Details
Days Set Up
Monday - Friday
Analytic Time
3 - 12 days
Soft Order Code
MMLR
Synonyms
- Warfarin Sensitivity Analysis
- WARF
- Cytochrome P450 2C9 Genotyping
- Vitamin K Epoxide Reductase C1 Genotyping
- CYP450 Genotype
- VKORC1 Genotype
- CYP2C9 Genotype
Laboratory
Sendout
Reference Laboratory
Mayo WARSV
Section
Special Testing
Specimen Requirements
Collection Instructions
Collect specimen in a lavender top (EDTA) tube. Send intact specimen at room temperature within 24 hours of collection
Normal Volume
3 mL EDTA whole blood
Minimum Volume
0.5 mL EDTA whole blood
Additional Information
Test sent to Mayo Medical Laboratories.
Billing
CPT Code
0030U
NY State Approved
No