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How can you prepare for a prothrombin time test?

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This test checks how quickly your blood clots. You’ll get your blood drawn to give a sample. You usually don’t need to do anything special. Your doctor will tell you if you should avoid any foods or drinks. Tell your doctor if you take any medicines, vitamins, herbs, or supplements. Many medications, like aspirin and steroids, can affect your results. Also, if you’re on the blood thinner warfarin, you may want to get the test before you take your dose for the day.

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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When do you get results from a prothrombin time test?

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