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Test ID: WARFP    
Warfarin Sensitivity Genotype by Sequence Analysis, Blood

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Test Classification Provides information regarding the medical device classification for laboratory test kits and reagents. Tests may be classified as cleared or approved by the US Food and Drug Administration (FDA) and used per manufacturer's instructions, or as products that do not undergo full FDA review and approval, and are then labeled as an Analyte Specific Reagent (ASR), Investigation Use Only (IUO) product, or a Research Use Only (RUO) product.

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Medical Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.

81227-CYP2C9 (cytochrome P450, family 2, subfamily C, polypeptide 9) (eg, drug metabolism), gene analysis, common variants (eg, *2, *3, *5, *6)
81355-VKORC1 (vitamin K epoxide reductase complex, subunit 1) (eg, warfarin metabolism), gene analysis, common variants (eg, -1639/3673)

LOINC® Code Information Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the result codes returned for this test or profile.

Result IDReporting NameLOINC Code
WARFQWarfarin Sensitivity GenotypingIn Process
26941Warfarin Sens Phenotype Interp69047-9
32183CYP2C9 Star Alleles/VKORC1 Genotype54451-0
28359CYP2C9 430C>T(*2)In Process
28360CYP2C9 818delA(*6)In Process
28361CYP2C9 1075A>C(*3)In Process
28362CYP2C9 1076T>C(*4)In Process
28363CYP2C9 1080C>G(*5)In Process
87988VKORC1 -1639G>AIn Process
28332Warfarin Sens Genotype Interp69047-9
28364Warfarin Sensitivity Reviewed byIn Process