What do the results mean?Your PTT test results will show how much time it took for your blood to clot. Results are usually given as a number of seconds. If your results show that your blood took a longer-than-normal time to clot, it may mean you have:A bleeding disorder, such as hemophilia or von Willebrand disease. Von Willebrand disease is the most common bleeding disorder, but it usually causes milder symptoms than other bleeding disorders.Liver diseaseAntiphospholipid antibody syndrome or lupus anticoagulant syndrome. These are autoimmune diseases that cause your immune system to attack your coagulation factors.Vitamin K deficiency. Vitamin K plays an important role in forming coagulation factors.If you are taking heparin, your results can help show whether you are taking the right dose. You will probably be tested on a regular basis to make sure your dosage stays at the right level.If you are diagnosed with a bleeding disorder, talk to your health care provider. While there is no cure for most bleeding disorders, there are treatments available that can help manage your condition.Learn more about laboratory tests, reference ranges, and understanding results.
