Diagnostic test
Prothrombin Time (PT)
About test
What does Prothrombin Time (PT) measure?
Prothrombin Time (PT) is a blood clotting test that measures how long it takes blood to form a clot through certain clotting pathways. It may be used to assess bleeding or clotting concerns, monitor treatment with warfarin and evaluate liver function or vitamin K–related clotting problems. PT results are often interpreted along with the International Normalized Ratio (INR) and other coagulation tests.
This overview is educational. Use the recorded preparation, sample and lab-partner details below for collection guidance, and confirm any missing information before collection.
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Sagepath Labs
- Sample for analysis
- Whole Blood (3ml)
- Report time
- 11:00/18:00
Preparation and specimen requirements can vary by test and laboratory. Follow the instructions shown for your selected partner and any advice from your healthcare professional.