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Warfarin (Coumadin) Resistance Testing

Purpose:

To evaluate a patient who appears to be warfarin resistant.

Specialty:

Cardiovascular Diseases, Vascular Medicine, Clinical Pharmacology, Pharmaceutical Medicine

Objective:

clinical diagnosis, including family history for genetics, laboratory tests, failure handling and therapy escalation, response to therapy, drug levels, overdose and reversal

ICD-10:

I74, I81, I82, O88

Description:

Warfarin resistance refers to the need for high doses of warfarin (20 mg or more per day) to achieve a therapeutic increase in the prothrombin time (PT) and INR.

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