What is this test?
This test measures the activity of a blood-clotting protein known as factor VIII to find out whether you have hemophilia A or another clotting disorder.
 
Sample required
Blood.
 
Patient preparation
No specific patient preparation protocol is required. Inform your doctor if you are on any medications or have any underlying medical conditions or allergies before undergoing this test.
 
Turn-around time (How long does it take?)
5 Hours.
 
Basis of the Test
Coagulation factors are proteins circulating in the blood that are essential for proper blood clot formation. Coagulation factor tests measure the function of or sometimes the amount of these proteins in the blood. There are nine coagulation factor proteins that can be measured clinically Factor I, II, V, VII, IX, X, XI, XIII. These factors are referred to by a name or Roman numeral or both in some cases. When one or more of these factors are produced in too small a quantity, or are not functioning correctly, they can cause excessive bleeding.