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Biomonitoring and Nonpersistent Chemicals—Understanding and Addressing Variability and Exposure Misclassification
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Biomonitoring and Nonpersistent Chemicals—Understanding and Addressing Variability and Exposure Misclassification
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Journal Article
Biomonitoring and Nonpersistent Chemicals—Understanding and Addressing Variability and Exposure Misclassification
2019
Overview
Purpose of Review
We offer here a review of intraindividual variability in urinary biomarkers for assessing exposure to nonpersistent chemicals. We provide thoughts on how to better evaluate exposure to nonpersistent chemicals.
Recent Findings
We summarized reported values of intraclass correlation coefficients and found that most values fall into categories that indicate only poor to good reproducibility. Even within the “good” classification, a large percentage of study participants is likely to be misclassified as to their exposure.
Summary
There is sufficient information to support the statement that studies using only one spot measurement of a nonpersistent chemical will be unreliable. It is unequivocal that multiple samples have to be collected over a period of toxicological relevance and with consideration of exposure patterns. Sponsors of research and researchers themselves should be vocal about ensuring that sufficient resources are made available to properly characterize exposures when studying nonpersistent chemicals. Otherwise, we will continue to see an ever-growing body of literature yielding inconsistent and/or uninterpretable results.
Publisher
Springer International Publishing,Springer Nature B.V
Subject
/ Biomedical and Life Sciences
/ Environmental Exposure - analysis
/ Environmental Exposure - classification
/ Environmental Monitoring - methods
/ Exposure
/ Humans
/ Methods in Environmental Epidemiology (AZ Pollack and NJ Perkins
/ PCB
/ Perfluoroalkyl & polyfluoroalkyl substances
/ Topical Collection on Methods in Environmental Epidemiology
/ Urine
