What is Activated partial thromboplastin time (APTT)? Why is the test done? What are the health conditions that require this test? Everything around this, that you should know, in this post and of course our doctors are always there to help you. Just fill in your details in the form down below and we will answer all your questions for FREE!

What is activated partial thromboplastin time ( APTT)?

This test is used to measure the intrinsic system factors ( VIII, IX, XI and XII) and factors common to both intrinsic and extrinsic systems ( factors X, V, prothrombin and fibrinogen).

What is the normal value of activated partial thromboplastin time?

The normal range of activated partial thromboplastin time is 30-40 seconds.

Why is the activated partial thromboplastin test done?

• This test is usually done in patients who are taking heparin.
• The test is usually done if someone is scheduled for surgery then it helps make sure blood is clotting normally to avoid complications during the procedure.
• Some people may need this test if they have bleeding or clotting disorder symptoms

And symptoms may include:

• Unexplained heavy bleeding
• The heavy menstrual period in women
• Leg pains or tenderness
• Redness or red streaks on the legs
• Rapid heartbeat.

What does high-activated partial thromboplastin indicate?

It means that blood is clotting too slowly, which can be due to the following:

• Parenteral administration of heparin.
• Disseminated intravascular coagulation.
• Liver disease.
• Circulating anticoagulants.
• Vitamin K deficiency

What does low-activated partial thromboplastin indicate?

• APTT is usually lowered in acute haemorrhagic conditions.
• The lower range indicates a higher chance of getting blood clots
• Pregnant women are at higher risk of miscarriage with low APTT.

Also Read: IRON TEST