Prothrombin Time Test
Blood (Citrate)
Hematology
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When Should You Get Prothrombin Time Test
PT/INR testing is ordered for:
- Monitoring patients taking the blood thinner warfarin
- Before surgery, to assess bleeding risk
- Investigating unexplained bleeding, bruising, or blood in urine or stool
- Assessing liver function, since clotting factors are produced in the liver
- Evaluating vitamin K status
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Quick Facts
CategoryHematology
Specimen TypeBlood (Citrate)
Organ System—
Available At0 labs
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