PT/INR: At a Glance

PT and INR

Also known as: Prothrombin Time, Pro Time
Formal name: Prothrombin Time, International Normalized Ratio
Related tests: Activated Clotting Time (ACT), Partial Thromboplastin Time (PTT), Prothrombin Consumption Time (PCT), Fibrinogen, Coagulation Factors

	At A Glance
	Why get tested? To check how well blood-thinning medications (anti-coagulants) are working to prevent blood clots; to help detect and diagnose a bleeding disorder When to get tested? If you are taking an anti-coagulant drug or if your doctor suspects that you may have a bleeding disorder Sample required? A blood sample drawn from a vein in the arm; sometimes blood from a fingerstick Next >>

This article was last reviewed on May 6, 2005.