What values for factor VIII (FVIII) assays indicate hemophilia A?

Updated: Jan 14, 2019
  • Author: Douglass A Drelich, MD; Chief Editor: Srikanth Nagalla, MBBS, MS, FACP  more...
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Answer

Normal values for FVIII assays are 50-150%. Values in hemophilia A are as follows:

  • Mild: >5%

  • Moderate: 1-5%

  • Severe: < 1%


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