It usually takes from 24 to 72 hours for healthy people to completely digest food and eliminate waste products. The first stop for food is the esophagus, which moves food from the back of the throat to the stomach. About six to eight hours after eating, food passes through the stomach and small intestine.
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.
INR (international normalized ratio) tests are important in helping your healthcare provider determine your response to COUMADIN. INR tests check to see how fast your blood clots. The INR test is primarily used to monitor warfarin therapy, where the aim is to maintain an INR in target range. Your healthcare provider will decide what INR numbers are best for you and may adjust your dose of COUMADIN to keep your INR in your target range.