Aldosterone, urine*
Salt-loaded (120 meq Na+/d for 3–4 days): 1.5–12.5 mcg/24 hr
Salt-depleted (10 meg Na+/d for 3–4 days): 18–85 mcg/24 hr
[1 mcg/24 hr = 2.77 nmol/d]
Bottle containing boric acid
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