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PROTHROMBIN TIME (PT/INR)
313

Information

Prothrombin Time with INR – Screening test for abnormalities of coagulation factors that are involved in the extrinsic pathway. Also used to monitor effects of Warfarin therapy and to study patients with hereditary and acquired clotting disorders.

Methodology
Clot Det
Specimen Required

One full unopened 3.2% sodium citrate (light blue-top) tube.

CPT Code(s)
85610