Final answer:
PT stands for Prothrombin Time, PTT stands for Partial Thromboplastin Time, and INR stands for International Normalized Ratio. These are coagulation tests that measure the time it takes for blood to clot.
Step-by-step explanation:
When looking at coats, PT stands for Prothrombin Time, PTT stands for Partial Thromboplastin Time, and INR stands for International Normalized Ratio. These are all coagulation tests that measure the time it takes for blood to clot. Prothrombin Time measures the speed of a particular pathway of coagulation, while Partial Thromboplastin Time measures the overall clotting ability of the blood. The International Normalized Ratio compares the patient's PT to a normal value, and helps monitor the effectiveness of blood-thinning medication.