Which laboratory value in a 76-year-old woman on systemic fluconazole (Diflucan) therapy should you report immediately to the prescriber?
a. Hematocrit of 38%
b. Bilirubin of 0.4 mg/dL
c. Potassium of 2.2 mEq/L
d. Blood urea nitrogen (BUN) of 12.2 mg/dL
ANS: C
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