PROTHROMBIN TIME (PT) WITH INR | |
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Test Code: 280 | Specimen Collection: Plasma |
Component:
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Collection Notes: Draw to the proper fill level (do not overfill or underfill) because the correct ratio of blood to citrate is critical (9:1). Mix by gentle inversion 5-6 times. Hemolyzed or clotted specimens are not acceptable. Centrifuge and physically separate the plasma using a plastic transfer pipette into a separate plastic transfer tube, Freeze and transport frozen. | |
Clinical Utility: The measurement of PT is the method of choice for monitoring anticoagulant therapy with vitamin K antagonists (warfarin-type oral anticoagulant drugs, e.g., Coumadin), especially for preventing post-operative thrombosis and pulmonary embolism, and to screen for coagulation factor deficiency in hemorrhagic diseases. | |
CPT Code: 85610 | Testing Location: AML |
SPECIMEN/STABILITY TYPETemperature:Plasma Citrate (Light Blue Top) Ambient 24 Hours Frozen 14 Days Plasma pour off (Light Blue Top) Ambient 24 Hours |