A known hemophiliac has developed an inhibitor.The physician in charge of his care wants to know how much inhibitor is present so that he can properly treat him.What two lab tests would he have to order to assess this?

Question

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Factor VIII: C level test measures the level of factor VIII in the patient's blood, which gives an indication of the severity of hemophilia. The Bethesda titer test helps in identifying the presence of inhibitors and measures the levels of antibodies in the blood that can neutralize factor VIII. Therefore, these two tests can help the physician in charge of his care to assess the presence of inhibitors and appropriately treat him.

A Known Hemophiliac Has Developed an Inhibitor