NCLEX RN Practice Test Free Related

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The physician has ordered a homocysteine blood level on a client. The nurse recognizes that the results will be increased in a client with a deficiency in:

  • A. Vitamin B12
  • B. Vitamin C
  • C. Vitamin A
  • D. Vitamin E
Correct Answer: A

Rationale: Homocysteine levels rise with vitamin B12 deficiency, as B12 is needed for homocysteine metabolism, unlike other vitamins listed.