Table 1. Normal white blood cell ranges... | American Society of Hematology

Table 1.

Normal white blood cell ranges by age

Age	Total white blood cells ( × 10³/µL) Mean (± 2SD)
1-3 days	18.9 (9.4-34)
2 weeks	11.4 (5-20)
1 month	10.8 (4-19.5)
6 months-2 years	10.6 (6-17)
2-6 years	8.5 (5-15.5)
6-12 years	8.1 (4.5-13.5)
12-18 years	7.8 (4.5-13.5)

Age	Total white blood cells ( × 10³/µL) Mean (± 2SD)
1-3 days	18.9 (9.4-34)
2 weeks	11.4 (5-20)
1 month	10.8 (4-19.5)
6 months-2 years	10.6 (6-17)
2-6 years	8.5 (5-15.5)
6-12 years	8.1 (4.5-13.5)
12-18 years	7.8 (4.5-13.5)

Adapted from The Harriet Lane Handbook, 23^rd Edition.