Values for healthy children

Each laboratory and lab handbook has slightly different reference values for each blood cell, so your lab sheets may differ slightly from those that appear later in this appendix. (See Figure B-1.) There is also variation in values for children of different ages. For instance, in children from newborn to 4 years old, granulocytes are lower and lymphocytes higher than the numbers listed below. Geographic location affects reference ranges as well. The following table lists blood count values for healthy children.

Blood Count Type

Values for Healthy Children

Hemoglobin (Hgb)

11.5 to 13.5 g/100ml


34 to 40%

Red blood count

3.9 to 5.3 m/cm or 3.9 to 5.3 x 1012/L


160,000 to 500,000/mm3

White blood count

5,000 to 10,000/mm3 or 5 to 10 K/ul

WBC differential:

Segmented neutrophils

50 to 70%

Band neutrophils

1 to 3%


0.5 to 1%


1 to 4%


12 to 46%


2 to 10%

Bilirubin (total)

0.3 to 1.3 mg/dl

Direct (conjugated)

0.1 to 0.4 mg/dl

Indirect (unconjugated)

0.2 to 1.88 mg/dl


0 to 36 IU/l


0 to 48 IU/l

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