Ulta Lab Tests

Clotting Factor VIII Activity Test

The Clotting Factor VIII Activity Test measures the activity of factor VIII, a protein essential for normal blood clotting. Low activity may indicate hemophilia A or acquired deficiencies, while elevated activity is linked to clotting risk. This test helps evaluate unexplained bleeding, bruising, or thrombosis, and supports diagnosis of inherited or acquired clotting disorders, providing insight into overall hemostatic function.

Blood
Blood Draw
Coag Factor VIII Activity Test
There are no preparation instructions.

The following is a list of what is included in the item above. Click the test(s) below to view what biomarkers are measured along with an explanation of what the biomarker is measuring.

Also known as: Factor VIII Activity Clotting

Coag Factor Viii Activity

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The Clotting Factor VIII Activity Test test contains 1 test with 1 biomarker .

This test is useful to evaluate a prolonged aPTT. The most common form of hemophilia is caused by a deficiency of Factor VIII. Hemophilia A is an X-linked disorder affecting between 1 in 5000 to 10000 males.

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