Prothrombin time
How many seconds a sample of your plasma takes to clot through one of the two clotting pathways.
How many seconds a sample of your plasma takes to clot through one of the two clotting pathways.
It is the standard check on liver clotting-factor production and on warfarin-type anticoagulation.
The seconds are not comparable between laboratories, which is exactly why INR exists -- if both are printed, track the INR. Vitamin K intake shifts it, so a sudden change in diet shows up here.
Worth discussing any value outside the range if you are not on an anticoagulant.
On a report in another language.
A lab report names this analyte in its own language. Vitals Vault recognises each of these and files them all under Prothrombin time.
Catalog entry last updated 2026-08-28. Browse all 165 metrics.