A Patient Has Been Taking Coumadin for a Recent Thrombophilic

A patient has been taking Coumadin for a recent thrombophilic episode. He follows up with his physician two weeks after starting this treatment. The physician sees evidence of skin necrosis on the patient. What should the physician do next to investigate this finding?

A) Request and have a PT and an APTT drawn
B) Request and have a Protein C antigen assay drawn
C) Request and have a HC-II antigen assay drawn
D) Request and have a Protein S antigen assay drawn

Correct Answer:

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