For the present study, we used the urinary concentrations of MEHP and MEHHP (Preau et al. 2010), as well as two other DEHP metabolites [mono 2-ethyl-5-oxohexyl) phthalate (MEOHP) and mono(2-ethyl-5-carboxypentyl) phthalate (MECPP)] that had been measured at the time of the original study but not reported by Preau et al. (2010).
Children's exposure to deltamethrin was assessed using as biomarkers the urinary concentrations of the metabolites 3-phenoxybenzoic acid (3-PBA) and cis-3- 2,2-dibromovinyl -2,2-dimethylcyclopropane-1-carboxylic cis-3- 2,2-dibromovinyl -2,2-dimethylcyclopropane-1-carboxylic
Urine creatinine concentrations were used to adjust the urinary concentrations of pesticides and metabolites of pesticides and phthalates in subsets of adults participating in NHANES III.
Quantitative steroid profiling combined with gas chromatography-mass spectrometry was used to measure the urinary concentrations of 84 steroids in both pre- (n = 21, age: 36.95 ± 7.19 yr) and post-menopausal female (n = 19, age: 52.79 ± 7.66 yr), and male (n = 16, age: 41.88 ± 8.48 yr) patients with PTC.
We used the urinary phthalate monoester concentrations from the study population of 214 mother infant pairs to calculate daily exposure estimates.
A novel method using liquid chromatography tandem mass spectrometry was developed and used to measure directly and rapidly the urinary concentrations of the glucuronidated and sulfated metabolites of α-tocopherol in 32 young patients with type 1 diabetes and age-matched controls.
Methods: We determined the urinary concentrations of BPA using on-line solid-phase extraction coupled to isotope dilution high-performance liquid chromatography/tandem mass spectrometry.
As reported previously, the intensity of DEHP-containing product use was strongly related to the urinary concentrations of DEHP metabolites (Green et al. 2005; Weuve et al. 2006).
The equation for calculating the CrCl uses the urinary volume, the urinary creatinine concentration and the serum creatinine concentration.
Using measured urinary concentrations of BPA and considering toxicokinetics, total daily doses of BPA well below 1 µg/kg bw have been derived (Dekant and Völkel, 2008; Miyamoto and Kotake, 2006).
