PTT
Also known as: Activated Partial Thromboplastin Time; aPTT; APTT
Formal name: Partial Thromboplastin Time
Related tests: Prothrombin Time (PT); Fibrinogen; Thrombin Time; Lupus Antibody; Activated Clotting Time (ACT); Coagulation Factors; Platelet Count; Heparin Anti-Xa
At a Glance
Why Get Tested?
As part of an investigation of a bleeding or thrombotic episode; to monitor unfractionated (standard) heparin anticoagulant therapy
When to Get Tested?
When you have unexplained bleeding or blood clotting; when you are on unfractionated (standard) heparin anticoagulant therapy; sometimes as part of a pre-surgical screen
Sample Required?
A blood sample drawn by needle from a vein in the arm
