Collaborative Method Performance Study of the Measurement of Nicotine, Its Metabolites, and Total Nicotine Equivalents in Human Urine
| Autor: | Gerhard Scherer, Jeanita S. Pritchett, Lorna T. Sniegoski, Makiko Shimizu, Kirk Newland, Hiroshi Yamazaki, Mira Doig, Peyton Jacob, June Feng, Sung Kim, Sharon E. Murphy, Yao Li, Nikola Pluym, Ernest McGahee, Max Scherer, John T. Bernert, Benjamin C. Blount, Nicolas J. Caron, Neal L. Benowitz, James L. Pirkle, Loralie J. Langman, Samuel P. Caudill, Lane C. Sander, Lanqing Wang |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Nicotine Tobacco use Epidemiology NICOTINE EXPOSURE Urinary system Physiology Urine Article 03 medical and health sciences chemistry.chemical_compound Glucuronides 0302 clinical medicine Equivalent Predictive Value of Tests Prevalence Humans Medicine 030212 general & internal medicine Cotinine Intralaboratory business.industry Smoking Reproducibility of Results United States 030104 developmental biology Oncology chemistry business Biomarkers medicine.drug |
| Zdroj: | Cancer Epidemiology, Biomarkers & Prevention. 27:1083-1090 |
| ISSN: | 1538-7755 1055-9965 |
| DOI: | 10.1158/1055-9965.epi-17-1127 |
| Popis: | Background: Biomarkers of tobacco exposure have a central role in studies of tobacco use and nicotine intake. The most significant exposure markers are nicotine itself and its metabolites in urine. Therefore, it is important to evaluate the performance of laboratories conducting these biomarker measurements. Methods: This report presents the results from a method performance study involving 11 laboratories from 6 countries that are currently active in this area. Each laboratory assayed blind replicates of seven human urine pools at various concentrations on three separate days. The samples included five pools blended from smoker and nonsmoker urine sources, and two additional blank urine samples fortified with pure nicotine, cotinine, and hydroxycotinine standards. All laboratories used their own methods, and all were based on some form of liquid chromatography/tandem mass spectrometry. Results: Overall, good agreement was found among the laboratories in this study. Intralaboratory precision was good, and in the fortified pools, the mean bias observed was < + 3.5% for nicotine, approximately 1.2% for hydroxycotinine, and less than 1% for cotinine (1 outlier excluded in each case). Both indirect and direct methods for analyzing the glucuronides gave comparable results. Conclusions: This evaluation indicates that the experienced laboratories participating in this study can produce reliable and comparable human urinary nicotine metabolic profiles in samples from people with significant recent exposure to nicotine. Impact: This work supports the reliability and agreement of an international group of established laboratories measuring nicotine and its metabolites in urine in support of nicotine exposure studies. Cancer Epidemiol Biomarkers Prev; 27(9); 1083–90. ©2018 AACR. |
| Databáze: | OpenAIRE |
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