Table 2.
Urinary arsenic metabolites (n= 1027)
| Arsenic metabolites | Median | p10 | p90 |
|---|---|---|---|
| Total As-AsB (μg As/g creata) | 19.96 | 6.40 | 98.41 |
| Total Asb (μg As/g creat) | 25.90 | 7.17 | 152.94 |
| iAs | 1.95 | 0.63 | 9.96 |
| MMA | 1.82 | 0.58 | 9.37 |
| DMA | 15.62 | 4.87 | 75.22 |
| AsB | 0.85 | 0.08 | 37.74 |
| Metabolitesc (%) | |||
| iAs | 10.15 | 5.39 | 18.87 |
| MMA | 9.84 | 5.64 | 15.28 |
| DMA | 79.68 | 68.01 | 87.40 |
| Methylation ratiosd | |||
| MMA/iAs | 1.00 | 0.50 | 1.79 |
| DMA/MMA | 8.00 | 4.52 | 14.88 |
| DMA/iAs | 7.84 | 3.64 | 16.12 |
a
Creatinine (mg/dL), p10, p50, p90: 18.49, 63.99, 161.5
b
AsB (μg As/g creat) in Total As= 3.28%
c
Percentage in Total As
d
Primary methylation= MMA/iAs, secondary methylation= DMA/MMA, total methylation= DMA/iAs