Normal VALUES for adults

Question 1

Osmolality

Answer 1

280-300 mOsm/kg H2O

280-300 mmol/kg H2O

Question 2

Sodium (Na+)

Answer 2

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

Question 3

Potassium (K+)

Answer 3

3.5-5.0 mEq/L (3.5-5 mmol/L)

Question 4

Chloride (Cl−)

Answer 4

Chloride (Cl−)

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

Question 5

Total CO2 (CO2 total content)

Answer 5

Total CO2 (CO2 total content) 
22-30 mEq/L (22-30 mmol/L)

Question 6

Bicarbonate ( HCO3

− )

Answer 6

Bicarbonate ( HCO3
− )
Arterial 22-26 mEq/L (22-26 mmol/L)
Venous 24-30 mEq/L (24-30 mmol/L)

Question 7

Total calcium (Ca2+)

Answer 7

Total calcium (Ca2+) 
8.4-10.5 mg/dL (2.1-2.6 mmol/L)

Question 8

Ionized calcium (Ca2+)

Answer 8

4.5-5.3 mg/dL (1.1-1.3 mmol/L)

Question 9

Magnesium (Mg2+)

Answer 9

1.5-2.5 mEq/L (0.75-1.25 mmol/L)

Question 10

Phosphate (PO4

3−)

Answer 10

2.7-4.5 mg/dL (0.87-1.45 mmol/L)

Question 11

Anion gap

Answer 11

5-11 mEq/L (5-11 mmol/L)

Question 12

pH

Answer 12

7.35-7.45

Question 13

PaCO2

Answer 13

35-45 mm Hg (4.7-6 kPa)

Question 14

PaO2

Answer 14

80-100 mm Hg (10.7-13.3 kPa)

Question 15

O2 saturation

Answer 15

95%-100% (0.95-1.00)

Question 16

Base excess

Answer 16

−2 to +2 mmol/L