Clinical Chemistry Reference Ranges

MLS 4410

Sodium serum reference range

135–145 mmol/L

Sodium serum critical low

<120 mmol/L

Sodium critical high

>160 mmol/L

Potassium reference range

3.5–5.1 mmol/L

Potassium critical low

<2.5 mmol/L

Potassium critical high

>6.0 mmol/L

Magnessium reference range

1.3–2.1 mg/dL

Chloride serum reference range

98–109 mmol/L

Chloride 24 hr urine reference range

110–250 mmol/L

Chloride CSF reference range

120–132 mmol/L

Venous total carbon dioxide reference range

23–27 mmol/L

Bicarbonate reference range

22–26 mmol/L

Calcidiol critical low

<20 ng/mL

Total calcium reference range

8.6–10.0 mg/dL

Total calcium critical low

<6.0 mg/dL

Total calcium critical high

>13 mg/dL

Ionized calcium reference range

4.6–5.3 mg/dL

Phosphorus reference range

2.4–4.4 mg/dL

Arterial blood pH

7.35–7.45

Arterial blood pCO₂

35-45 mmHg

Arterial blood pO₂

85-105 mmHg

Arterial blood saturation

≥95%

FiO₂ of room air

21%

BUN serum/plasma reference range

6–20 mg/dL

BUN serum/plasma critical high

>80 mg/dL

BUN urine reference range

12–20 g/day

Creatinine serum/plasma reference range

0.6–1.3 mg/dL

Creatinine serum/plasma critical high

>4.0 mg/dL

Creatinine urine reference range

600–2000 mg/day

Creatinine clearance reference range

88-137 mL/min

Creatinine clearance criticial low

<10 mL/min