Table 3.

Distribution of creatinine-adjusted concentrations of urinary arsenic species (iAs, MMA, and DMA) (n = 64)

Exposure variablesa\Percentileb	Min	5th	25th	50th	75th	95th	Max
As metabolites (μg g−1 crea)
MMA	0.06	0.08	0.19	0.40 (1.10)c	1.67	6.14	28.5
DMA	0.07	3.09	11.27	20.73 (14.58)	29.5	70.75	129.1
iAs	0.11	0.19	0.41	0.83 (0.61)	1.33	4.74	6.55
tAs	0.34	3.76	12.09	23.19 (16.29)	33.29	76.02	137.5

^aAbbreviations: iAs represents the sum of As³⁺ and As⁵⁺; MMA: methylarsonic acid; DMA: dimethylarsinic acid; tAs: the sum of iAs, MMA, and DMA; μg g⁻¹ crea: μg per g creatinine

^bPregnant women from Maternal Infant cohort in Taiwan (n = 64). Limit of detection for As³⁺ is 0.09 μg/L, As⁵⁺ is 0.05 μg/L, for MMA it is 0.05 μg/L and for DMA it is 0.04 μg/L

^cThe values inside parenthesis are the average value of unadjusted arsenic expressed as μg/L