Clinical Chemistry Reference Ranges

MLS 4410

Sodium reference range

135–145 mmol/L

Sodium 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 24hr 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 reference range

7.35–7.45

Arterial blood pCO₂ reference range

35–45 mmHg

Arterial blood pO₂ reference range

85–105 mmHg

Normal 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

GFR of stage 1 renal failure

>90 mL/min

GFR of stage 2 renal failure

60–89 mL/min

GFR of stage 3A renal failure

45–59 mL/min

GFR of stage 3B renal failure

30–44 mL/min

GFR of stage 4 renal failure

15–29 mL/min

GFR of stage 5 renal failure

<15 mL/min

Total CK in men reference range

46–180 IU/L

Total CK in women reference range

15-171 IU/L

Lactate dehydrogenase reference range

140–280 IU/L

Aspartate transaminase (AST) reference range

5–30 IU/L

Alanine transaminase (ALT) reference range

6–37 IU/L

Alkaline phosphatase (ALP) reference range

30–90 IU/L

Conjugated bilirubin reference range

0.0–0.2 mg/dL

Unconjugated bilirubin reference range

0.2–0.8 mg/dL

Amylase reference range

30–100 IU/L

Lipase reference range

30–60 IU/L

Troponin critical reference range

>0.10 ng/mL

Troponin I reference range

0.00–0.08 ng/mL

Myoglobin reference range

28-72 ng/mL

High-sensitivity C-reactive protein reference range

<1.0 mg/L

High-sensitivity C-reactive protein critical high

>10.0 mg/L

CK-MB reference range

<6.2 ng/mL

Pro-BNP reference range

<30 pg/mL

Serum iron reference range

45–150 µg/dL

Transferrin reference range

200–380 mg/dL

TIBC reference range

250–400 µg/dL

Transferrin saturation reference range

20–50%

Serum ferritin in men reference range

24–336 µg/L

Serum ferritin in women reference range

11–307 µg/L

Lead reference range

<10 µg/dL

Blood glucose reference range

74–106 mg/dL

Blood glucose critical low

<50 mg/dL

Blood glucose critical high

>500 mg/dL

HbA1c reference range

4.0–6.0%

Fasting non-diabetic CSF glucose reference range

40–70 mg/dL

24-hour urine glucose reference range

<500 mg/24hr

Diagnostic of diabetes plasma glucose concentration (+ symptoms of diabetes)

>126 mg/dL

Diagnostic of diabetes fasting plasma glucose level

>126 mg/dL

Diagnostic of diabetes three-hour postprandial OGTT glucose level

>200 mg/dL

Diagnostic HbA1c level

>6.5% confirmed on repeat measurement

LDL desirable level

<100 mg/dL

LDL near undesirable level

100–129 mg/dL

LDL borderline undesirable level

130–159 mg/dL

LDL undesirable level

>159 mg/dL

HDL desireable level

>60 mg/dL

HDL grey area level

40–59 mg/dL

HDL high risk level

<40 mg/dL

Hypercholesterolemia total cholesterol range

300-1000 mg/dL

Triglycerides reference range

60–150 mg/dL

Triglyceride borderline high range

150–200 mg/dL

Triglyceride high range

200–500 mg/dL

Triglyceride very high range

>500 mg/dL

Normal lipid loss in feces level

6 g/day