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Prothrombin Time (PT) and INR Test
Accurately monitor blood thinner effectiveness and prevent clotting or bleeding risks. This test measures prothrombin time to ensure your blood's optimal balance.

The prothrombin time (PT) test with International Normalized Ratio (INR) is a blood test that measures the time required for a clot to form in a plasma sample after the addition of tissue thromboplastin and calcium. It primarily assesses the efficiency of the extrinsic and intrinsic pathways in the coagulation cascade (factors VII, X, V, II, and fibrinogen). The INR is calculated from the PT value to compensate for variations between different laboratory reagents, making it a globally accepted standard for monitoring vitamin K antagonist (warfarin) therapy.
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