Table 1.
Summary statistics for biomarkers, collected during early and late gestation.
| a. Blood, stool, meconium and hair | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maternal blood (μg/L) |
Maternal stool (ng/g dry weight) |
Meconium (ng/g wet weight) |
Hair (μg/g) |
|||||||||||
| Early Median (range) |
Early (n) |
Late Median (range) |
Late (n) |
Early Median (range) |
Early (n) |
Late Median (range) |
Late (n) |
Median (range) |
(n) | −5.2–7.6 wks Median (range) |
7.6–21 wks Median (range) |
21–32 wks Median (range) |
(n) | |
| THg | 0.63 (0.017, 2.5) | 28 | 0.48 (0.075, 1.5) | 24 | 28 (1.1, 1400) | 28 | 19 (1.0,400) | 24 | 3.9 (0.64, 11) | 14 | 0.078 (0.0054, 0.57) | 0.071 (0.0050, 0.66) | 0.080 (0.0030, 0.57) | 24 |
| MeHg | 0.37 (0.0099, 1.6) | 28 | 0.29 (0.014, 1.4) | 24 | 0.035 (0.0029,2.1) | 28 | 0.0093 (0.0013, 1.7) | 24 | 0.0078 (<MDL, 0.078) | 17 | NA | NA | NA | NA |
| IHg | 0.25 (0, 0.90) | 28 | 0.069 (0, 0.69) | 24 | 28 (1.1, 1400) | 28 | 19 (1.0,400) | 24 | 3.9 (0.64, 11) | 14 | NA | NA | NA | NA |
| %MeHg (of THg) | 59 (16, 114) | 28 | 72 (16, 117) | 24 | 0.12 (0.00031, 8.9) | 28 | 0.050 (0.0025, 2.0) | 24 | 0.34 (0.055, 0.84) | 14 | NA | NA | NA | NA |
| %IHg (of THg) | 41 (0, 84) | 28 | 28 (0, 84) | 24 | 100 (91, 100) | 28 | 100 (98, 100) | 24 | 100 (99, 100) | 14 | NA | NA | NA | NA |
| IHg (inorganic mercury, THg - MeHg), MDL (method detection level), MeHg (methylmercury), THg (total mercury) | ||||||||||||||
| b. Plasma 25(OH)D | ||||||||||||||
| 25(OH)D (ng/mL) | ||||||||||||||
| Early Median (range) |
Early (n) |
Late Median (range) |
Late (n) |
|||||||||||
| All | 28.7 (10.5, 40.9) | 22 | 40.9 (12.9, 87.1) | 21 | ||||||||||
| Unsupplemented | 28.1 (10.5, 40.9) | 13 | 35.7 (12.9, 56.2) | 13 | ||||||||||
| Supplemented | 29.7 (17.1,37.6) | 9 | 50.9 (31.2, 87.1) | 8 | ||||||||||
| 25(OH)D (25-hydroxy-vitamin D) | ||||||||||||||