Learn how to pinpoint the cause of prolonged PT / PTT and investigate bleeding in patients with normal PT / PTT. In this video, you will learn the mechanisms behind PT tests and how to interpret the results. You will be able to formulate a common differential diagnosis of prolonged PT and understand which tests to order next. Demystify hematology and coagulation with our fascinating Hematology & Coagulation Essentials course: http://bit.ly/2GgturE | Medmastery