Serum levels of hydroxylated PCBs, PCBs and thyroid hormone measures of Japanese pregnant women

Table 5 Serum concentrations of ΣPCBs and each isomer (ng/g lipid wt.) of the present subject (n = 126)

	Percent detected (%)	Geometric mean (GSD)	Median	Range
	Percent detected (%)	Geometric mean (GSD)	Median	Min	Max
ΣPCBs_29 isomers	–	68 (1.6)	69	20	210
CB-28	100	0.68 (1.6)	0.63	0.24	6.7
CB-74	100	1.8 (1.8)	1.8	0.26	7.5
CB-66	100	0.66 (1.7)	0.66	0.17	4.0
CB-101	100	0.48 (1.6)	0.50	0.14	2.0
CB-99	100	2.4 (1.7)	2.6	0.62	6.5
CB-118	100	3.9 (1.8)	3.9	0.74	13
CB-105	100	0.80 (1.7)	0.84	0.17	2.4
CB-146	100	2.0 (1.6)	2.1	0.63	5.8
CB-153	100	16 (1.7)	16	4.2	54
CB-137	98	0.40 (1.7)	0.42	<LOD	1.3
CB-164/163	100	3.2 (1.7)	3.4	0.90	9.8
CB-138	100	8.2 (1.7)	8.9	2.2	28
CB-167	99	0.56 (1.8)	0.54	<LOD	2.0
CB-156	100	1.3 (1.7)	1.3	0.31	4.6
CB-178	100	0.84 (1.6)	0.88	0.26	2.8
CB-182/187	100	4.6 (1.6)	4.8	1.6	13
CB-183	100	1.1 (1.6)	1.1	0.38	3.4
CB-177	100	0.86 (1.6)	0.86	0.28	2.2
CB-172	100	0.46 (1.6)	0.46	0.14	1.5
CB-180	100	8.6 (1.6)	8.6	2.7	29
CB-193	100	0.70 (1.7)	0.72	0.19	2.2
CB-170	100	3.0 (1.6)	3.0	0.91	9.3
CB-190	100	0.61 (1.6)	0.61	0.19	1.8
OB-202	100	0.45 (1.6)	0.44	0.13	1.7
OB-199	100	1.1 (1.6)	1.1	0.34	3.6
OB-203	100	0.70 (1.6)	0.71	0.21	2.2
OB-194	100	1.2 (1.6)	1.2	0.34	4.4
CB-206	99	0.40 (1.5)	0.39	<LOD	1.2
CB-209	98	0.33 (1.6)	0.32	<LOD	1.2

LOD limit of detection, GM geometric mean, GSD geometric standard deviation
GM and median values were calculated by substituting one-half of LOD for undetectable samples. Three subjects with low recovery of internal standard were excluded from this table

ISSN: 1347-4715