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Normal values for WBC, lymphocytes, T cells (CD3), B cells (CD19), and NK cells (CD16/56)

Normal values for WBC, lymphocytes, T cells (CD3), B cells (CD19), and NK cells (CD16/56)
Subset 0 to 3 months
(×103/microL)		 3 to 6 months
(×103/microL)		 6 to 12 months
(×103/microL)		 1 to 2 years
(×103/microL)
WBC 10.60 (7.20 to 18.00) 9.20 (6.70 to 14.00) 9.10 (6.40 to 13.00) 8.80 (6.40 to 12.00)
Lymphocytes 5.40 (3.40 to 7.60) 6.30 (3.90 to 9.00) 5.90 (3.40 to 9.00) 5.50 (3.60 to 8.90)
CD3 3.68 (2.50 to 5.50) 3.93 (2.50 to 5.60) 3.93 (1.90 to 5.90) 3.55 (2.10 to 6.20)
CD19 0.73 (0.30 to 2.00) 1.55 (0.43 to 3.00) 1.52 (0.61 to 2.60) 1.31 (0.72 to 2.60)
CD16/56 0.42 (0.17 to 1.10) 0.42 (0.17 to 0.83) 0.40 (0.16 to 0.95) 0.36 (0.18 to 0.92)
WBC: white blood cell; NK: natural killer.
Adapted from:
  1. Buckley RH. The long quest for neonatal screening for severe combined immunodeficiency. J Allergy Clin Immunol 2012; 129:597.
  2. Shearer WT, Rosenblatt HM, Gelman RS, et al. Lymphocyte subsets in healthy children from birth through 18 years of age: The Pediatric AIDS Clinical Trials Group P1009 study. J Allergy Clin Immunol 2003; 112:973.
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