This test is sometimes called an activated partial thromboplastin time (APTT) test. Your doctor may order a PTT test to investigate the cause of prolonged or excessive bleeding. Symptoms that may ...

Coagulopathy caused by liver disease invariably results in prolonged PT and PTT. A common but easily missed etiology of spontaneous bleed with normal PT, PTT, and platelets is von Willebrand disease.

Transfusing the patient with fresh frozen plasma and monitoring the PT and PTT can exclude liver disease. The values will normalize somewhat, then gradually become prolonged as the body uses the ...

The most sensitive laboratory indices of liver function are the coagulation factors, PT and PTT. Alteration in liver function is reflected very early by prolonged coagulation times. The PT and PTT ...

and prolonged bleeding from minor wounds suggest a problem with platelets (quantitative or qualitative) or with blood vessel integrity. The presurgical prothrombin time (PT) is an example of a ...