?
PS is an 87-year-old male admitted to a hospital for stomach pain. He has mild breathing problems and complains of fatigue and chronic stomach upset, for which he takes a daily antacid. While hospitalized, a physician has determined that PS has megaloblastic anemia.
What lab values would be altered given the likely cause of PS's problem?
A. low folate
B. low creatinine
C. low cyanocobalamin
D. high serum ferritin
E. high leukocytes
Answer: C
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