Table 5.

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

Age group	Number	Geometric mean ± SD	Mean ± SD	Min–max	95% confidence interval
0–30 days	30	16.89 ± 8.87	20.38 ± 8.87	5.1–50.9	15.57–5.18
1–3 months	30	34.21 ± 13.55	36.66 ± 13.55	15.2–68.5	31.60–41.72
4–6 months	30	69.05 ± 29.73	75.44 ± 29.73	26.9–130	64.34–86.54
7–12 months	30	73.42 ± 35.76	81.05 ± 35.76	24.2–162	67.7–94.41
13–24 months	30	115.25 ± 41.63	122.57 ± 41.63	38.6–195	107.03–138.12
25–36 months	30	104.66 ± 40.55	111.31 ± 40.55	42.7–236	96.17–126.46
3–5 years	30	115.60 ± 39.24	121.79 ± 39.24	58.7–198	107.13–136.44
6–8 years	30	108.05 ± 41.27	114.73 ± 41.27	50.3–242	99.32–130.14
9–11 years	30	104.95 ± 43.68	113.18 ± 43.68	37.4–213	96.87–129.49
12–16 years	30	119.16 ± 39.31	125.78 ± 39.31	42.4–197	111.1–140.46
16–18 years	30	130.60 ± 64.32	142.54 ± 64.32	60.7–323	118.53–166.55
Total	330	78.74 ± 43.46	96.86 ± 43.46	5.1–323	91.07–102.65

IgM: Immunoglobulin M