
Warfarin (Coumadin) Resistance Testing
Purpose: | To evaluate a patient who appears to be warfarin resistant. |
Specialty: | Hematology Oncology Clinical Laboratory Clinical Pharmacology |
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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