| Volunteer status | 83 Non-pregnant | 70 Pregnant | |
| Metabolite | Median | 95% CI | Number with value > CI (%) |
| MnBP | 26.70 | 8.17 - 28.43 | 36 (51.4) |
| MEP | 65.80 | 3.63 - 149.51 | 12 (17.1) |
| MBzP | 14.34 | 2.94 - 17.68 | 4 (5.7) |
| MEHP | 3.03 | 1.85 - 4.89 | 15 (21.4) |
| MEHHP | 14.29 | 9.45 - 22.19 | 17 (24.3) |