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Table 2 Composition of bodily fluids

From: Dose and type of crystalloid fluid therapy in adult hospitalized patients

  Na+(mmol/l) K+(mmol/l) Ca2+(mmol/l) Mg2+(mmol/l) HCO3(mmol/l) Lactate(mmol/l) Other buffer (mmol/l) Cl-(mmol/l) Organic acid (mmol/l) Protein
Plasma 142 4 5 2 101 27 2 1 6 16
Plasma water 153 4.3 5.4 2.2 109 29 2.2 1 6.5 17
Interstitial water 139 4 5 2 114 31 2 1 7 1
Intracellular water 10 160 2 26 3 10 100 20   65