Prothrombin Time and INR. Guide. Prothrombin time (PT) is a blood test that measures how long it takes blood to clot. A prothrombin time test can be used to check for bleeding problems. PT is also used to check whether medicine to prevent blood clots is working. A PT test may also be called an INR test.rothrombin time (PT) is a blood test that measures how long it takes blood to clot. A prothrombin time test can be used to check for bleeding problems. PT is also used to check whether medicine to prevent blood clots is working. A PT test may also be called an INR test.
Use the following estimates, based on a body weight of 150lbs, to help you determine how many calories you might burn doing about an hour of typical daily housework/ cleaning: 1  Sweeping x 10 minutes = 37 calories. 2  Vacuuming x 10 minutes = 37 calories.  Ironing x 20 minutes = 50 calories.
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