Practice NCLEX RN Questions Related

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Which laboratory test would be the least effective in making the diagnosis of a myocardial infarction?

  • A. AST
  • B. Troponin
  • C. CK-MB
  • D. Myoglobin
Correct Answer: A

Rationale: AST is less specific for myocardial infarction than troponin, CK-MB, or myoglobin.