A prothrombin time (PT) is a test used to help detect and diagnose a bleeding disorder or excessive clotting disorder; the international normalized ratio (INR) is calculated from a PT result and is used to monitor how well the blood-thinning medication (anticoagulant) warfarin (Coumadin®) is working to prevent blood clots. #best pathology in Moshi #best pathology lab in moshi #best pathology lab near me #best pathology near me #pathology in Moshi #pathology lab in moshi #pathology lab near me #pathology near me #PT-INR test #blood group test #all types of blood test