Thursday, February, 09, 2012

Factor X assay

Table of Contents

Normal Values

A normal value is 50 - 200% of the laboratory control or reference value.

Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.


What abnormal results mean

Decreased factor X activity may be related to:

  • Amyloidosis
  • Congenital deficiency of factor X
  • Fat malabsorption
  • Liver disease
  • Taking heparin or warfarin
  • Vitamin K deficiency


Review Date: 03/02/2009
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)