reference intervals exam 4

pH range

7.35-7.45

optimal pH

7.4

pO2/paO2

80-100 mm Hg (on room air)

pCO2/paCO2

35-45 mm Hg (on room air)

HCO3

22-26 mEq/L

base excess

-2-2 mEq/L

percent oxygen saturation (pulse ox)

95-100%

total serum calcium

8.5-10.5 mg/dL

total serum calcium critical action values

• less than 6 mg/dL

• greater than 13 mg/dL

free ionized calcium

4.6-5.3 mg/dL

free ionized calcium critical action value

• less than 0.9 mmol/L

• greater than 1.55 mmol/L

phosphate

2.5-4.5 mg/dL

phosphate critical action value

less than 1.0 mg/dL

magnesium

1.7-2.4 mg/dL

magnesium critical action value

• less than 1.0 mg/dL

• greater than 4.0 mg/dL

sodium

135-145 mEq/L

potassium

3.5-5 mEq/L

chloride

100-110 mEq/L

tCO2

21-31 mEq/L

anion gap

10-20

osmolality

280-300 mOsmol/kg

venous glucose (fasting)

74-99 g/dL

CSF protein

15-45 mg/dL

creatinine

0.5-1.5

urea

6-20 mg/dL

sodium critical action values

• less than 120

• greater than 160

potassium critical action value

• less than 3.0

• greater than 6.1