Which lab values suggest hemophilia A?

Updated: Jan 14, 2019
  • Author: Douglass A Drelich, MD; Chief Editor: Srikanth Nagalla, MBBS, MS, FACP  more...
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Expected laboratory values are as follows:

  • Hemoglobin/hematocrit: Normal or low

  • Platelet count: Normal

  • Bleeding time and PT: Normal

  • APTT: Significantly prolonged in severe hemophilia, but may be normal or minimally prolonged in mild or even moderate hemophilia

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