A 72-year-old man presents to the physician because of increasing fatigue over the past year. His serum biochemistry is:
Na: 138 (NR 135-145)
K: 5.2 (NR 3.5-5.0)
HCO3: 22 (NR 22-28)
Eosinophils: 15% (NR 0-6%)
What’s the next best step in diagnosis?
ACTH stimulation test
Dexamethasone suppression test
Metyrapone test
Stool ova and parasites
Stool pH
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Cut-to-the-chase Answer (1:14):
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HY USMLE Answer (7:26):
