. 2011 Jul 8;10:64. doi: 10.1186/1476-069X-10-64

Table 5.

Serum hepatic enzyme activities in the three groups based on the regulatory upper limit of arsenic concentrations in drinking water

Parameters	Categories	n	Liver Enzyme Activity (U/L) (Mean ± SD)
			ALP	AST	ALT

Arsenic in drinking water	≤ 10 μg/L	38	83.37 ± 24.27	34.67 ± 7.42	24.23 ± 7.91

	10.1 - 50 μg/L	21	90.47 ± 18.14	35.86 ± 8.00	26.92 ± 8.41

	> 50 μg/L	141	107.75 ± 31.48^{a, b}	41.45 ± 17.42 ^{a, b}	34.01 ± 24.26 ^{a, b}

p-value			< 0.01^a, < 0.01^b	< 0.01^a, 0.05^b	< 0.01^a, < 0.05^b

^aStatistically significant ≤ 10 μg/L

^bStatistically significant from between 10.1 and 50 μg/L