Activated Partial Thromboplastin Time (APTT), Sodium Citrate Whole Blood
Synonyms/Also Known as
Activated Partial Thromboplastin Time, aPTT
PT and INR, Fibrinogen, D-dimer, Thrombin Time, Lupus Anticoagulant Testing, ACT, Coagulation Factors, Platelet Count, Heparin Anti-Xa, Von Willebrand Factor, Antiphospholipid Antibodies
Why get tested?
To investigate a bleeding disorder or a blood clot. To monitor heparin anticoagulant therapy and as part of routine screening before surgery.
When to get tested?
When there is unexplained bleeding, inappropriate blood cloting, or miscarriages frequently, when a person is on heparin anticoagulant therapy and as part of routine screening before surgery.
Test preparation needed
No special preparation required
About The Test
How is it used
1. Is the aPTT always used to monitor heparin anticoagulant therapy?
It is used in most of the cases to monitor the heparin anticoagulant therapy but in few cases like open heart surgery where high doses of heparin are used, deep vein thrombosis (DVT) treatment and people with lupus anticoagulant, aPTT test is not reliable.
2. Is aPTT testing compulsory?
The aPTT test is not a routine screening test but is done when there is a family history of abnormal bleeding or clotting or when a person has symptoms, and prior to a surgery or procedure.
3. How can the aPTT value change?
The aPTT value ca ot be changed by lifestyle modifications. In temporary or acute conditions it may return to normal once the cause is resolved.