NUR 324: Normal Electrolytes Lab Values

Osmolality

285-295 mOsm/kg H2O (285-295 mmol/kg H2O)

Sodium (Na+)

136-145 mEq/L (136-145 mmol/L)

Potassium (K+)

3.5-5.0 mEq/L (3.5-5.0 mmol/L)

Chloride (Cl-)

98-106 mEq/L (98-106 mmol/L)

Total CO2 (CO2 total content)

22-30 mEq/L (22-30 mmol/L)

Bicarbonate (HCO3-)
Arterial

21-28 mEq/L (21-28 mmol/L)

Bicarbonate (HCO3-)
Venous

24-30 mEq/L (24-30 mmol/L)

Total calcium (Ca2+)

9.0-10.5 mg/dL (2.25-2.62 mmol/L)

Ionized calcium (Ca2+)

4.5-5.6 mEq/L (1.05-1.3 mmol/L)

Magnesium (Mg2+)

1.3-2.1 mEq/L (0.65-1.05 mmol/L)

Phosphate

3.0-4.5 mg/dL (0.97-1.45 mmol/L)

Anion gap

6 +/- 4 mEq/L (6 +/- 4 mmol/L)