Table of Contents
- Overview
- Results
- Risks
- Prevention
The factor V assay is a blood test to measure the activity of factor V -- one of the substances involved in blood clotting (coagulation).
How the test is performed
A blood sample is needed. For information on how this is done, see:
How to prepare for the test
No special preparation is needed.
How the test will feel
When the needle is inserted to draw blood, you may feel moderate pain, or only a prick or stinging sensation. Afterward, there may be some throbbing.
Why the test is performed
This test is used to find the cause of too much bleeding (decreased blood clotting).
Review Date: 02/28/2011
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of
General Medicine, Department of Medicine, University of Washington
School of Medicine; and Yi-Bin Chen, MD, Leukemia/Bone Marrow
Transplant Program, Massachusetts General Hospital. Also reviewed
by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org)
