How much potassium is absorbed in the GI tract, and how is it excreted?

Updated: Dec 06, 2018
  • Author: Eleanor Lederer, MD, FASN; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Potassium is obtained through the diet. Gastrointestinal absorption of potassium is complete, resulting in daily excess intake of approximately 1 mEq/kg/day (60-100 mEq). Of this excess, 90% is excreted through the kidneys, and 10% is excreted through the gut.

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