Maternal levels of endocrine disruptors, polybrominated diphenyl ethers, in early pregnancy are not associated with lower birth weight in the Canadian birth cohort GESTE

Table 2 Levels of PBDEs, PCBs, selenium, mercury, lead, cadmium and manganese in early pregnancy (N = 349)

	% of detected values	25^th percentile	50^th percentile	75^th percentile	Maximum
PBDE congeners (ng/mL)
PBDE-47	100	0.07	0.12	0.25	2.74
PBDE-99	95	5.10⁻³	0.01	0.03	0.48
PBDE-100	77	4.10⁻³	7.10⁻³	0.01	0.36
PBDE-153	79	8.10⁻³	0.02	0.05	0.39
Σ PBDEs		0.10	0.19	0.34	3.63
PBDE congeners (ng/g of lipids)
PBDE-47		10.78	21.23	40.82	548.00
PBDE-99		0.76	1.93	5.44	96.00
PBDE-100		0.66	1.32	2.44	81.63
PBDE-153		1.08	2.44	8.97	85.33
Σ PBDEs		17.08	32.99	59.63	726.00
PCBs (ng/g of lipid)^a
PCB-138	93	2.29	4.25	10.41	178.04
PCB-153	99	4.55	8.02	19.80	410.43
PCB-180	100	2.02	4.11	9.02	90.91
Σ PCBs		10.91	18.87	42.80	455.78
Metals^b
Manganese (ng/mL)	100	7.70	9.35	11.55	32.45
Mercury (ng/mL)	85	0.38	0.62	1.01	6.83
Lead (ng/mL)	100	6.21	8.28	10.35	64.17
Cadmium (ng/mL)	100	0.11	0.22	0.36	6.04

Abbreviations: PBDE(s) polybrominated diphenyl ether(s), ΣPBDE total PBDEs, PCB(s) polychlorinated biphenyl(s), ΣPCBs total PCBs
^aMissing values for PCBs, n = 2
^bMissing value for at least one metal (n = 57)

ISSN: 1476-069X