[Warning: The following story contains spoilers about Wednesday's episode of Criminal Minds. Read at your own risk.] That sound you hear is baby girls crying everywhere. After 11 years and (probably) 103 broken doors and 214 tackles, Shemar Moore exited Criminal Minds on Wednesday's episode.
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 (CoumadinÂ®) is working to prevent blood clots.
A PT and INR are ordered on a regular basis when a person is taking the anticoagulant drug warfarin to ensure that the prescription is working properly and that the PT/INR is appropriately prolonged. There is no set frequency for doing the test.omeone who is not taking warfarin would compare their PT test result to the normal range provided with the test result by the laboratory performing the test. A prolonged PT means that the blood is taking too long to form a clot.