This test measures how long it takes your blood to clot by evaluating two key pathways in the body’s clotting process. PT (Prothrombin Time) assesses the extrinsic and common pathways, while PTT (Partial Thromboplastin Time) measures the intrinsic and common pathways. Together, they help provide insight into blood clotting function and can be useful for evaluating bleeding risk or monitoring certain medications that affect coagulation.

Fasting is not required for this test.

A provider will approve your labs, and your Lab Requisition Form will be emailed to you within 24 business hours. Labcorp will also have this on file. Please bring a valid photo ID to your nearest Labcorp location. Results will be securely emailed as soon as they are available.