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What is a prothrombin time test?

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The prothrombin time (PT) test measures how long it takes your blood to clot. If it takes a long time, that could be a sign of liver damage. Medications that thin your blood, such as warfarin (Coumadin), can also lead to a longer PT.

From: What Is a Liver Test? WebMD Medical Reference

SOURCES:

American Liver Foundation: “Liver Function Tests.”

KidsHealth: “Blood Test: (Liver) Hepatic Function Panel.”

Mayo Clinic: “Cirrhosis,” “Hepatitis B,” “Liver Function Tests.”

Royal Society of Chemistry: “Enzymes.”

World Health Organization: “What Is Hepatitis?”

Lab Tests Online: “Liver Panel,” “Tips on Blood Testing.”

University of Rochester Medical Center: “D-Dimer.”

Reviewed by Minesh Khatri on January 17, 2017

SOURCES:

American Liver Foundation: “Liver Function Tests.”

KidsHealth: “Blood Test: (Liver) Hepatic Function Panel.”

Mayo Clinic: “Cirrhosis,” “Hepatitis B,” “Liver Function Tests.”

Royal Society of Chemistry: “Enzymes.”

World Health Organization: “What Is Hepatitis?”

Lab Tests Online: “Liver Panel,” “Tips on Blood Testing.”

University of Rochester Medical Center: “D-Dimer.”

Reviewed by Minesh Khatri on January 17, 2017

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How should you get ready for a liver test?

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