Laboratory Values Used in Evaluating Fluid and Electrolytes Status in Adults

Laboratory Values Used in Evaluating Fluid and Electrolytes Status in Adults
Test	Usual Ref. Range	SI Units
Serum sodium	135 – 145 mEq/L	135 – 145 mmoL/L
Serum potassium	3.5 – 5.0 mEq/L	3.5 – 5.0 mmol/L
Total serum calcium	8.6 – 10.2 mg/dL	2.15 – 2.55 mmol/L
Ionized calcium	4.5 – 5.0 mg/dL	1.05 – 1.30 mmol/L
Serum magnesium	1.3 – 2.5 mEq/L	0.65 – 1.25 mmol/L
Serum phosphorus	2.5 – 4.5 mg/dL	0.87 – 1.45 mmol/L
Serum chloride	97 – 107 mEq/L	97 – 107 mmol/L
Carbon dioxide content	24 – 32 mEq/L	24 – 32 mmol/L
Serum osmolality	275 – 300 mOsm/kg	275 – 300 mmol/L
Blood Urea Nitrogen (BUN)	10 – 20 mg/dL	3.6 – 7.2 mmol/L
Serum creatinine	0.7 – 1.4 mg/dL	62 – 124 μmol/L
BUN to creatinine ratio	10:1 – 20:1	-
Hematocrit	Males: 42 – 52% Females: 35 – 47%	Vol. fraction: 0.42 – 0.52 Vol. fraction: 0.35 – 0.47
Serum glucose	60 – 110 mg/dL	3.3 – 6.05 mmol/L
Serum albumin	3.5 – 5.0 g/dL	3.5 – 5.0 g/L
Urinary sodium	75 – 200 mEq/day	75 – 200 mmol/day
Urinary potassium	26 -123 mEq/day	26 – 123 mmol/day
Urinary chloride	110 – 250 mEq/24 h	110 – 250 mmol/24 h
Urine specific gravity	1.003 – 1.030	1.002 – 1.030
Urine osmolality	250 – 900 mOsm/kg	250 – 900 mmol/kg
Urinary pH	Random: 4.5 – 8.0 Typical urine: <5 – 6	4.5 – 8.0 <5 – 6