increased plasma Sodium on day 21 coincided with reduced Sodium
retention and increased urinary excretion of Sodium in the benzoic
acid-containing diets, indicating that the ability to use plasma
concentrations of minerals as an indicator of mineral status
differs among minerals. Plasma Sodium may not be useful as an
indicator of Na status, whereas plasma Phosphorus and Potassium might beuseful as an indicator of Phosphorus and Potassium status at deficient or extreme
high supplies, respectively.