Number of clinical findings suggesting a possible variant allele at CYP2C9
Should the patient be genotyped for CYP2C9?
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Purpose: To identify a patient receiving warfarin therapy who may have a variant allele at cytochrome P450 CYP2C9 resulting in poor drug metabolism.
Specialty: Toxicology, Emergency Medicine, Critical Care, Genetics
Objective: criteria for diagnosis, selection