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Temporal Variability of Urinary Phthalate Metabolite Levels in Men of Reproductive Age

Open access
Hauser, Russ, Meeker, John D., Park, Sohee, Silva, Manori J., Calafat, Antonia M.·2004·Environmental Health Perspectives

Abstract

Phthalates are a family of multifunctional chemicals widely used in personal care and other consumer products. The ubiquitous use of phthalates results in human exposure through multiple sources and routes, including dietary ingestion, dermal absorption, inhalation, and parenteral exposure from medical devices containing phthalates. We explored the temporal variability over 3 months in urinary phthalate metabolite levels among 11 men who collected up to nine urine samples each during this time period. Eight phthalate metabolites were measured by solid-phase extraction-high-performance liquid chromatography-tandem mass spectrometry. Statistical analyses were performed to determine the between- and within-subject variance apportionment, and the sensitivity and specificity of a single urine sample to classify a subject's 3-month average exposure. Five of the eight phthalates were frequently detected. Monoethyl phthalate (MEP) was detected in 100% of samples; monobutyl phthalate, monobenzyl phthalate, mono-2-ethylhexyl phthalate (MEHP), and monomethyl phthalate were detected in > 90% of samples. Although we found both substantial day-to-day and month-to-month variability in each individual's urinary phthalate metabolite levels, a single urine sample was moderately predictive of each subject's exposure over 3 months. The sensitivities ranged from 0.56 to 0.74. Both the degree of between- and within-subject variance and the predictive ability of a single urine sample differed among phthalate metabolites. In particular, a single urine sample was most predictive for MEP and least predictive for MEHP. These results suggest that the most efficient exposure assessment strategy for a particular study may depend on the phthalates of interest.

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Metadata

Authors
Hauser, R., Meeker, J. D., Park, S., Silva, M. J., & Calafat, A. M.
Venue
Environmental Health Perspectives
Published
2004-12
Volume
112
Issue
17
Pages
1734-1740
ISSN
  • 0091-6765 (ISSN-L)
  • 1552-9924
OpenAlex
W2117843333
Cited by
473
References
26
FWCI
7.28
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Temporal Variability of Urinary Phthalate Metabolite Levels in Men of Reproductive Age. https://app.cochat.ai/papers/10.1289/ehp.7212
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Hauser, R., Meeker, J. D., Park, S., Silva, M. J., & Calafat, A. M. (2004). Temporal Variability of Urinary Phthalate Metabolite Levels in Men of Reproductive Age. Environmental Health Perspectives. https://doi.org/10.1289/ehp.7212

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