Clot-based mixing studies and Bethesda titers are used to test for:
a. Vitamin K deficiency
b. Inhibitors (antibodies) against coagulation factors
c. DIC
d. Hemophilia
ANS: B
An inhibitor against a coagulation protein is confirmed using clot-based mixing studies. The Bethesda titer is then performed to determine the concentration of the inhibitor.
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