Table 2.
Creatinine-corrected urine iodine and creatinine-corrected urine NIS inhibitor concentrations according to categories of combined NIS exposures (low, medium, and high) in 940 girls (BCERP cohort 2004–2007).
| Exposure | n | Geo mean | Median | Minimum | Maximum | p95th |
|---|---|---|---|---|---|---|
| Low perchlorate, thiocyanate, and nitratea | ||||||
| Perchlorate (μg/gC) | 196 | 3.26 | 3.59 | 0.51 | 5.86 | 5.5 |
| Thiocyanate (μg/gC) | 196 | 554.61 | 625.84 | 75.77 | 1176.47 | 1103.4 |
| Nitrate (mg/gC) | 196 | 452.35 | 500.1 | 5.92 | 673.12 | 644.1 |
| Iodide (μg/gC) | 196 | 176.74 | 167.7 | 29.23 | 2111.11 | 691.59 |
| Medium perchlorate, thiocyanate, and nitrate | ||||||
| Perchlorate (μg/gC) | 555 | 6.16 | 5.92 | 0.25 | 193.14 | 18.72 |
| Thiocyanate (μg/gC) | 555 | 1179.71 | 1201.72 | 62.34 | 12756.26 | 3709.45 |
| Nitrate (mg/gC) | 555 | 734.83 | 680.25 | 95.74 | 129662.5 | 1895.77 |
| Iodide (μg/gC) | 555 | 235.69 | 230.26 | 28.6 | 4194.92 | 732.05 |
| High perchlorate, thiocyanate, and nitrateb | ||||||
| Perchlorate (μg/gC) | 189 | 11.48 | 9.58 | 5.87 | 136.84 | 35.96 |
| Thiocyanate (μg/gC) | 189 | 2438.13 | 2343.28 | 1180.23 | 24807.69 | 5675.68 |
| Nitrate (mg/gC) | 189 | 1066.49 | 955.22 | 676.47 | 6647.73 | 2423.08 |
| Iodide (μg/gC) | 189 | 308.37 | 294.12 | 31.71 | 2636.36 | 1060.22 |
| Abbreviations: Geo, geometric; p, percentile. aBelow the median concentration of all three NIS biomarkers. bAbove the median concentration of all three NIS biomarkers. | ||||||