Activated Partial Thromboplastin Time (APTT) is a laboratory test used to evaluate the intrinsic and common coagulation pathways. It is measured in seconds and is mainly used to monitor patients receiving unfractionated heparin therapy. It also helps in diagnosing bleeding disorders such as hemophilia, von Willebrand disease, or deficiencies in clotting factors (VIII, IX, XI, XII). A prolonged APTT indicates delayed clotting and higher bleeding risk, while a shortened APTT may suggest hypercoagulability.
Activated Partial Thromboplastin Time (APTT) is a blood test that measures how long it takes blood to clot through the intrinsic pathway.
Sample Type
Blood
Preparation
TAT
Results Within 4 Hours
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Everything you need to know about this test, from preparation to results