The nurse is caring for a patient suspected of having hemophilia. Which of the following tests would the nurse expect to be ordered to confirm the diagnosis?


•Specific clotting factor assays will be done to confirm the diagnosis of hemophilia.

•Most forms of hemophilia are caused by a deficiency of factor VIII or factor IX.

•With hemophilia, the platelet count and prothrombin time are normal. aPTT is generally elevated, which may lead a physician to suspect hemophilia.

Incorrect options:

•A platelet count, aPTT, and PT may be done for screening or to rule out other causes, but would not confirm hemophilia.

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