Table 2.

POP concentrations in serum and mother’s milk among mothers with measured maternal and infant thyroid hormone concentrations

	Maternal		Infant
	N	Median (range)	N	Median (range)
Seruma
di-ortho PCB (ng/g lipid)	281	128 (28–367)
mono-ortho PCB TEQ (pg/g lipid)	281	0.56 (0.2–3.6)
Breast milkb
PCDD/F TEQ (pg/g lipid)	91	7.9 (3.3–16)
tetra-pentaPBDE (ng/g lipid)	166	2.3 (0.46–31)	130	2.4 (0.54–31)
BDE-153 (ng/g lipid)	166	0.48 (<0.2–4.3)	130	0.49 (<0.2–2.2)

^adi-ortho PCB = sum of PCB 138, 153 and 180; mono-ortho PCB TEQ = sum of TEQs for PCB 105, 118, 156 and 167 [32]

^bPCDD/F TEQ = sum of TEQs for the 17 congeners with WHO TEFs [32]; tetra-pentaPBDE = sum of BDE-47, −99 and −100