What is the PTT?
The measurement of the PTT is a laboratory test for checking blood clotting. It is used on the one hand to diagnose coagulation disorders and on the other hand to assess the course of certain medications.
The aPTT (activated partial thromboplastin time) is a modified form of examination: here, coagulation is activated in the laboratory by adding phospholipids. This allows other factors involved in blood clotting to be tested.
When is the PTT determined?
The blood PTT value is frequently determined in clinical practice in patients who are being treated with anticoagulant drugs such as heparin. The test allows the physician to assess the effectiveness of the therapy.
The test is also performed if a blood coagulation disorder is suspected. Such a suspicion arises, for example, in the case of frequent nosebleeds, spontaneous bruising (hematomas) or prolonged bleeding after injuries.
