Table 1: Serum immunoglobulin, complement levels, lymphocyte subgroups as ratios, and absolute cell numbers with age-related reference values [46].

PatientReference values (mean ± SD)Min–max

IgG (mg/dL)1320822.3 ± 208.4430–1290
IgA (mg/dL)98.953.5 ± 26.823–130
IgM (mg/dL)14992.5 ± 33.936–199
IgE (IU/mL)0.9<1002–199
C3 (mg/dL)171120 ± 4581–171
C4 (mg/dL)28.322 ± 139–36
CD3+ T cells (%)
(cells/mm3)
71
2620
70.0 ± 7.18
3220 ± 1180
48.2–81.4
506–7267
CD19+ B cells (%)
(cells/mm3)
23
849
16.5 ± 5.70
739 ± 329
6.7–30.4
242–1459
CD3+CD4+ Th cells (%)
(cells/mm3)
40
1476
40.3 ± 7.27
1314 ± 542
23.2–59.5
118–3245
CD3+CD8+ Tc cells (%)
(cells/mm3)
28
1033
24.2 ± 5.48
803 ± 417
15.2–39
108–2367
CD3−CD1656+ NK cells (%)
(cells/mm3)
5
185
11.2 ± 4.85
509 ± 295
3.4–26.4
143–1599
CD3+HLA-DR+ active T cells (%)
(cells/mm3)
18
664
7.84 ± 3.7
375 ± 235
2.1–16.2
22–954