. 2017 May 26;6(5):e144. doi: 10.1038/cti.2017.20

Table 1. Summary of immunological laboratory findings.

Age in years	2 years	5 years	6 years	7 years
Test
IgG (3.5–12 g l⁻¹)	>32.2	<1.0	4.5	6.9
IgA (0.15–1.6 g l⁻¹)	1.7	<0.05	<0.05	<0.05
IgM (0.4–2 g l⁻¹)	0.7	<0.05	1.65	4.99
IgE (0–90 IU ml⁻¹)	<15
Hep B antibody		NR
Measles, mumps and rubella antibodies	NR	NR
CD3 (1.0–2.0 × 10⁹)	ND	5.210	3.260	0.730
CD4 (0.5–1.3 × 10⁹)	ND	1.230	0.860	0.820
CD8 (0.3–1.0 × 10⁹)	ND	3.510	2.030	1.730
CD19 (0.2–0.5 × 10⁹)	ND	0.410	0.300	0.190
CD20 (6–23%)	ND	<1	2.7	3.6
CD16/56 (cells per μl)	ND	0.840	0.450	0.090
%CD3⁺CD4⁺				33.4% (27.7–46.3)
%CD4⁺CD45RA⁺CCR7⁺ (naive CD4 cells)				5.2% (29.2–66.5)
%CD4⁺CD45RA⁻CCR7⁺ (central memory CD4T cells)				63.3% (11.6–24.7)
%CD4⁺CD45RA⁻CCR7⁻ (effector memory CD4T cells)				20.7% (7.1–21.4)
%CD4⁺CD45RA⁺CCR7⁻ (terminally differentiated CD4T cells)				10.7% (6.9–34.4)
%CD3⁺CD8⁺				51.5% (15.7–33.8)
%CD8⁺CD45RA⁺CCR7⁺ (naive CD8T cells)				4.9% (8.6–50.1)
%CD8⁺CD45RA⁻CCR7⁺ (central memory CD8T cells)				4.5% (1–4.6)
%CD8⁺CD45RA⁻CCR7⁻ (effector memory CD8T cells)				44.4% (16–47.2)
%CD8⁺CD45RA⁺CCR7⁻				46.1% (19.5–52.5)
%CD3⁺CD4⁺CD62L⁺CD31⁺ (recent thymic emigrant)				9% (19.4–60.9)
%CD19⁺				7% (9.7–23.7)
% CD19⁺IgD⁺CD27⁻ (naive B cell)				80.1% (47.3–77.0)
%CD19⁺CD27⁺IgD⁺ memory B cell				15.4% (5.2–20.4)
%CD19⁺CD27⁺IgD⁻ memory B cell				0.4% (10.9–30.4)
%CD19⁺CD27⁻IgD⁻ memory B cell				4.0% (2.3–11.0)
%CD19⁺CD24^hiCD38^hi transitional B cell				20.2% (4.6–8.3)
%CD19⁺CD21^loCD38^lo				38% (2.3–10.0)
%CD19⁺CD24^loCD38^hi plasmablast				0.8% (0.6–5.3)

Abbreviations: ND, not done; NR, not reactive.

Reference ranges.^{17, 18}