Function of Serum Complement in Drinking Water Arsenic Toxicity

Table 2

Levels of serum complements C3 and C4 and immunoglobulin G in the arsenic patients and control subjects.

Study subjects	Concentration in serum: (Mean ± SD) g/L
	Complement C3; NV: 0.9–2.1	Complement C4; NV: 0.1–0.4	Immunoglobulin G; NV: 7.0–16.0
Arsenic patients 𝑁=125	1.56 ± 0.36	0.29 ± 0.11	24.3 ± 7.5
	Median: 1.56	Median: 0.27	Median: 22.7
	Range: 0.16–2.50	Range: 0.1–0.57	Range: 7.7–49.3
Control subjects 𝑁=125	1.68 ± 0.35	0.25 ± 0.11	13.8 ± 7.8
	Median: 1.67	Median: 0.22	Median: 10.8
	Range: 0.9–2.64	Range: 0.05–0.49	Range: 4.2–31.6
Statistics (𝑃 value)	NS	NS (0.06)	<0.001

NV: normal value; NS: not significant.