Reference Values

SODIUM

<1 year: Not established

≥1 year: 135-145 mmol/L

POTASSIUM

<1 year: Not established

≥1 year: 3.6-5.2 mmol/L

CHLORIDE

1-17 years: 102-112 mmol/L

≥18 years: 98-107 mmol/L

Reference values have not been established for patients who are younger than 12 months of age.

BICARBONATE

Males

12-24 months: 17-25 mmol/L

3 years: 18-26 mmol/L

4-5 years: 19-27 mmol/L

6-7 years: 20-28 mmol/L

8-17 years: 21-29 mmol/L

≥18 years: 22-29 mmol/L

Females

1-3 years: 18-25 mmol/L

4-5 years: 19-26 mmol/L

6-7 years: 20-27 mmol/L

8-9 years: 21-28 mmol/L

≥10 years: 22-29 mmol/L

Reference values have not been established for patients that are younger than 12 months of age.

ANION GAP

≥7 years: 7-15

Reference values have not been established for patients who are younger than 7 years of age.

BLOOD UREA NITROGEN (BUN)

Males

1-17 years: 7-20 mg/dL

≥18 years: 8-24 mg/dL

Reference values have not been established for patients who are younger than 12 months of age.

Females

1-17 years: 7-20 mg/dL

≥18 years: 6-21 mg/dL

Reference values have not been established for patients who are younger than 12 months of age

CREATININE

Males:

0-11 months: 0.17-0.42 mg/dL

1-5 years: 0.19-0.49 mg/dL

6-10 years: 0.26-0.61 mg/dL

11-14 years: 0.35-0.86 mg/dL

≥15 years: 0.74-1.35 mg/dL

Females:

0-11 months: 0.17-0.42 mg/dL

1-5 years: 0.19-0.49 mg/dL

6-10 years: 0.26-0.61 mg/dL

11-15 years: 0.35-0.86 mg/dL

≥16 years: 0.59-1.04 mg/dL

ESTIMATED GLOMERULAR FILTRATION RATE (eGFR)

≥ 18 years old: ≥60 mL/min/BSA

Estimated GFR calculated using the 2021 CKD_EPI creatinine equation.

Note: eGFR results will not be calculated for patients younger than 18 years old.

CALCIUM

<1 year: 8.7-11.0 mg/dL

1-17 years: 9.3-10.6 mg/dL

18-59 years: 8.6-10.0 mg/dL

60-90 years: 8.8-10.2 mg/dL

>90 years: 8.2-9.6 mg/dL

GLUCOSE

0-11 months: Not established

≥1 year: 70-140 mg/dL

TOTAL PROTEIN

≥1 year: 6.3-7.9 g/dL

Reference values have not been established for patients who are younger than 12 months of age.

ALBUMIN

≥12 months: 3.5-5.0 g/dL

Reference values have not been established for patients who are younger than 12 months of age.

ASPARTATE AMINOTRANSFERASE (AST)

Males:

0-11 months: Not established

1-13 years: 8-60 U/L

≥14 years: 8-48 U/L

Females:

0-11 months: Not established

1-13 years: 8-50 U/L

≥14 years: 8-43 U/L

ALKALINE PHOSPHATASE (ALP)

Males

0-14 days: 83-248 U/L

15 days-<1 year: 122-469 U/L

1-<10 years: 142-335 U/L

10-<13 years: 129-417 U/L

13-<15 years: 116-468 U/L

15-<17 years: 82-331 U/L

17-<19 years: 55-149 U/L

≥19 years: 40-129 U/L

Females

0-14 days: 83-248 U/L

15 days-<1 year: 122-469 U/L

1-<10 years: 142-335 U/L

10-<13 years: 129-417 U/L

13-<15 years: 57-254 U/L

15-<17 years: 50-117 U/L

≥17 years: 35-104 U/L

ALANINE AMINOTRANSFERASE (ALT)

Males:

≥1 year: 7-55 U/L

Reference values have not been established for patients who are younger than 12 months of age.

Females:

≥1 year: 7-45 U/L

Reference values have not been established for patients who are younger than 12 months of age.

TOTAL BILIRUBIN

0-6 days: Refer to www.bilitool.org for information on age-specific (postnatal hour of life) serum bilirubin values.

7-14 days: 0.0-14.9 mg/dL

15 days to 17 years: 0.0-1.0 mg/dL

>18 years 0.0-1.2 mg/dL