Predictors of serum dioxin levels among adolescent boys in Chapaevsk, Russia: A cross-sectional pilot study

Table 3 Concentrations (ng/g lipid) of six PCB congeners^a in blood of adolescent boys from Chapaevsk, Russia

PCB congener (IUPAC #)	Average DL	# of Samples above the DL^b	Median Concentration (ng/g lipid)	Mean (SD) Concentration (ng/g lipid)
PCB 28	20.0	1/24	10.6	11.9 (6.33)
PCB 74	11.0	14/27	10.8	14.8 (10.8)
PCB 99	11.0	27/27	27.7	34.1 (22.5)
PCB 138	18.0	21/27	29.6	39.4 (22.2)
PCB 153	19.8	27/27	51.2	64.5 (30.7)
PCB 180	11.0	23/27	17.7	22.8 (14.9)
Sum of 6 congeners			136	168 (99.3)

Abbreviations: DL, detection limit
^aPCB congeners include 6 prevalent or indicator congeners (DIN 51 527, 1987)
^bResults for some samples could not be reported because one or more of the analytical QA/QC criteria were not met. Therefore, the denominator may be less than 30.

ISSN: 1476-069X