Normal Laboratory Values

	Traditional Units	SI Units
Arterial Blood Gases
P co ₂	33-44 mm Hg	4.4-5.9 kPa
P o ₂	75-105 mm Hg	10.0-14.0 kPa
pH	7.35-7.45	[H ⁺] 36-44 nmol/L
Serum Electrolytes ∗
Na ⁺	135-147 mEq/L	135-147 mmol/L
Cl ⁻	95-105 mEq/L	95-105 mmol/L
K ⁺	3.5-5.0 mEq/L	3.5-5.0 mmol/L
<SPAN role=presentation tabIndex=0 id=MathJax-Element-1-Frame class=MathJax style="POSITION: relative" data-mathml='HCO3−’>HCO−3 HCO 3 −	22-28 mEq/L	22-28 mmol/L
Ca ⁺⁺	8.4-10.0 mg/dL	2.1-2.8 mmol/L
P _i	3.0-4.5 mg/dL	1.0-1.5 mmol/L
Anion gap	8-16 mEq/L	8-16 mmol/L
Serum Proteins
Total	6.0-7.8 g/dL	60-78 g/L
Albumin	3.5-5.5 g/dL	35-55 g/L
Globulin	2.3-3.5 g/dL	23-35 g/L
Other Serum Constituents
Creatinine	0.6-1.2 mg/dL	53-106 mmol/L
Glucose (fasting)	70-110 mg/dL	3.8-6.1 mmol/L
Urea nitrogen (BUN)	7-18 mg/dL	1.2-3.0 mmol/L
Serum osmolality	285-295 mOsm/kg H ₂O	285-295 mOsm/kg H ₂O
Creatinine Clearance
Male	90-140 mL/min	90-140 mL/min
	130-200 L/day	130-200 L/day
Female	80-125 mL/min	80-125 mL/min
	115-180 L/day	115-180 L/day