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intravenous salt loading test

Indications: - evaluation of hyperaldosteronism Procedure: - infuse 2 liters of normal saline IV over 4 hours while the patient is supine - measure plasma aldosterone, plasma renin, serum cortisol & serum potassium at 0 & 4 hours Interpretation: - test confirms hyperaldosteronism if - plasma aldosterone > 10 ng/dL

General

salt loading test

References

  1. Medical Knowledge Self Assessment Program (MKSAP) 17, American College of Physicians, Philadelphia 2015

Components

aldosterone in serum/plasma cortisol in serum potassium (K+) in serum/plasma renin in plasma