Table 3.

Plasma Zn, Cu, Zn/Cu ratio and serum Cp levels of the ASD and healthy control children of 2–5 years age group.

Biochemical Parameters	ASD (n=17)	Control (n=18)	t-Test	p-value
Plasma Zn (mg/L)	0.90 ± 0.02 (0.74–1.06)	0.96 ± 0.03 (0.76–1.24)	−1.603	0.119
Plasma Cu (mg/L)	1.42 ± 0.06 (1.06–2.05)	1.20 ± 0.05 (0.91–1.70)	2.780	0.009*
Plasma Zn/Cu	0.65 ± 0.03 (0.45–0.95)	0.81 ± 0.02 (0.48–0.90)	−3.507	0.001*
Serum Cp (mg/dl)	30.19 ± 1.61 (23–42)	27.15 ± 0.86 (22–34)	1.661	0.110

Data are expressed as mean ± SE (range). Statistical analysis was done by independent sample t-test. n=number of children in each group; *=statistically significant (p≤ 0.05).