Table 8.

Age-related serum IgG3 levels in healthy children (mg/dL).

Age group	Number	Geometric mean ± SD	Mean ± SD	Min–max	95% confidence interval
25–36 months	30	15.53 ± 8.54	18.37 ± 8.54	7.86–57.5	13.67–23.07
3–5 years	30	30.81 ± 15.42	40.75 ± 15.42	7.86–122	28.84–52.65
6–8 years	30	39.33 ± 23.05	50.94 ± 23.05	7.86–157	37.11–64.77
9–11 years	30	25.36 ± 15.39	35.51 ± 15.39	7.86–93.8	24.95–46.07
12–16 years	30	31.03 ± 16.73	39.51 ± 16.73	7.86–119	29.53–49.49
16–18 years	30	38.89 ± 23.08	50.16 ± 23.08	7.86–157	36.32–64.01
Total	180	28.71 ± 15.76	39.21 ± 157.66	7.86–157	34.56–43.86

IgG3: Immunoglobulin G3