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What is a prothrombin time test?

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When you get a cut, your body jumps into action to keep things from getting out of hand. Cells called platelets get there first to slow the bleeding. Then a bunch of proteins called clotting factors show up. They all fit together to form a solid mass -- a blood clot -- to stop the bleeding so you can start healing. That’s what typically happens. But if you tend to bleed easily or you get clots when you shouldn’t, then you may have a problem with your clotting factors. That’s when you might need a prothrombin time test, which measures how quickly your blood clots.

From: What Is a Prothrombin Time Test? WebMD Medical Reference

SOURCES:

KidsHealth: “Blood Test: Prothrombin Time,” “Blood Test: Partial Thromboplastin Time (PTT).”

University of Rochester Medical School: “Prothrombin Time.”

Lab Tests Online: “Prothrombin Time and International Normalized Ratio.”

Mayo Clinic: “Prothrombin Time Test.”

National Hemophilia Foundation: “Von Willebrand Disease.”

Reviewed by Minesh Khatri on May 16, 2019

SOURCES:

KidsHealth: “Blood Test: Prothrombin Time,” “Blood Test: Partial Thromboplastin Time (PTT).”

University of Rochester Medical School: “Prothrombin Time.”

Lab Tests Online: “Prothrombin Time and International Normalized Ratio.”

Mayo Clinic: “Prothrombin Time Test.”

National Hemophilia Foundation: “Von Willebrand Disease.”

Reviewed by Minesh Khatri on May 16, 2019

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What does a prothrombin time test look for?

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