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. Author manuscript; available in PMC: 2016 Jul 1.
Published in final edited form as: Reprod Toxicol. 2014 Nov 22;54:120–128. doi: 10.1016/j.reprotox.2014.11.006

Table 6. Individual propyl paraben concentrations (μg/L) by matrices.

Individual Visit MilkB ‘Total’ Serum ‘Total’ Serum ‘Free’ Urine ‘Total’ ‘Total’ M:S:U Ratio
1 1 0.2 <LOD <LOD <LOD N/A
1 2 0.1 <LOD <LOD 0.5 1:<1:5
2 2 0.3 0.4 <LOD 34.3 1:1:114
3 2 0.6 5.4 1.0 279 1:9:465
4 2 0.3 3.5 0.6 77.5 1:12:258
5 2 0.2 1.5 0.7 13.8 1:8:69
6 2 NM 4.8 2.2 187 N/A
7 2 0.3 2.9 0.6 208 1:10:693
8 2 NM 0.9 0.5 41.8 N/A
9 2 0.4 5.2 1.3 151 1:13:377

‘Total’ concentrations refer to the sum of the free plus conjugated species. Raw data only from participants with milk samples available; M:S:U Ratio calculated using MilkB aliquots (tubes not opened prior to analyses) and Serum ‘Total’ values. N/A=not applicable; limit of detection (LOD); NM=not measured.