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Phosphate is a major intracellular anion important for intracellular metabolism of proteins, fats and carbohydrates and is a major component in phospholipid membranes and phosphoproteins. It also regulates enzymatic activity vital for energy transfer. About 4 mEq/g of nitrogen is needed for anabolism. 85% of total body phosphates are combined with calcium in the bones and teeth. Factors affecting calcium homeostasis also affect phosphate homeostasis, movement is the opposite of calcium.
Empiric daily requirement
Adults: 10 to 40 mMol/day
Infants/children: 0.5 to 2 mMol/kg/day
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