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Description: The Prothrombin Time test (PT test) is used to determine how long it takes for blood to clot. The PT test may be done to evaluate the effectiveness of blood thinning medication or to diagnose bleeding disorders. The Prothrombin Time test includes the International Normalized Ratio (INR). Turnaround time for the PT test is typically 1 business day.
Requirements: The PT test has no special requirements.
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