Fibrinopeptide A is a substance released as blood clots in your body. A test can be done to measure the level of this substance in your blood.
A blood sample is needed.
No special preparation is necessary.
When the needle is inserted to draw blood, some people feel moderate pain. Others feel only a prick or stinging. Afterward, there may be some throbbing or a slight bruise. This soon goes away.
This test is used to help diagnose severe problems with blood clotting such as disseminated intravascular coagulation (DIC). Certain types of leukemia are associated with DIC.
In general, the level of fibrinopeptide A should range from 0.6 to 1.9 (mg/mL).
Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or may test different specimens. Talk to your doctor about the meaning of your specific test results.
An increased fibrinopeptide A level may be a sign of:
Veins and arteries vary in size from one person to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.
Other risks associated with having blood drawn are slight but may include:
Reviewed By: Debra G. Wechter, MD, FACS, general surgery practice specializing in breast cancer, Virginia Mason Medical Center, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.