^

Health

A
A
A

Activated partial thromboplastin time (APTT)

 

Reference values of activated partial thromboplastin time (APTT)

Activated partial thromboplastin time (APTT) is one of the most valuable common tests to obtain an idea of the blood coagulation system. APTTV is a test that detects exclusively plasma defects of the internal X-factor activation system in phase I (formation of prothrombinase) of blood coagulation.

Determination of activated partial thromboplastin time - modification of the test for determining the recalcification time of stabilized blood (plasma). It has a higher sensitivity to deficiency of plasma clotting factors (except VII and XIII), however, when using this test, it is not possible to reveal the insufficiency of coagulation activity of platelets.

The elongation of activated partial thromboplastin time (APTT) reflects a deficiency of plasma factors (except VII and XIII) and is observed with their significant (below 25-10%) decrease. Elongation of activated partial thromboplastin time (APTT) indicates a predominance of hypocoagulation.

Reference values: 38-55 s. However, it should be noted that reference values in different laboratories may vary depending on the sensitivity and composition of the diagnostic kits.

Последнее обновление: 31.05.2018
!
Found an error? Select it and press Ctrl + Enter.

Medical expert editor

Portnov Alexey Alexandrovich

Education: Kiev National Medical University. A.A. Bogomolets, Specialty - "General Medicine"

Other doctors



Other articles on the topic

Coagulogram rate
The norm of the coagulogram is very important. The fact is that the analysis should correspond to some acceptable figures. Any deviation indicates the presence of problems in the human body. More details about this issue can be found below.
Coagulogram
Coagulogram is a type of blood test. It is conducted solely for the purpose of studying the ability of clotting. This is a very urgent issue for today.
D dimer
When fibrin fibers are cleaved, fragments are formed-D-dimers. When determining the content of D-dimers with the help of specific antisera, one can judge to what extent fibrinolysis, but not fibrogenolysis, is expressed in the test blood. The increased content of D-dimer is one of the main markers of activation of the hemostasis system, since it reflects both the formation of fibrin in the blood under study, and its lysis.

Share on social networks

You are reporting a typo in the following text:
Simply click the "Send typo report" button to complete the report. You can also include a comment.