Primary sources
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- CDC laboratory and public-health guidance — Centers for Disease Control and Prevention
- Casey ER et al., bupropion amphetamine false-positive series, J Med Toxicol 2013 — Journal of Medical Toxicology / PubMed
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- Cone EJ et al., benzoylecgonine excretion studies — Journal of Analytical Toxicology / PubMed
- DEA drug scheduling and controlled-substance docket materials — U.S. Drug Enforcement Administration
- DOT 49 CFR Part 40, transportation workplace drug and alcohol testing — U.S. Department of Transportation
- DailyMed structured product labeling — U.S. National Library of Medicine
- Dolder PC et al., LSD pharmacokinetics, Clinical Pharmacokinetics — Clinical Pharmacokinetics / PubMed
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- Immunoassay cross-reactivity and validation documentation (FDA 510(k) summaries) — U.S. Food and Drug Administration
- Life-insurance underwriting cotinine cutoff conventions — Industry underwriting references
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- Peer-reviewed literature (PubMed) — U.S. National Library of Medicine
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- SAMHSA Mandatory Guidelines for Federal Workplace Drug Testing Programs — Substance Abuse and Mental Health Services Administration
- SAMHSA drug testing resources and analyte specifications — Substance Abuse and Mental Health Services Administration
- State controlled-substance scheduling statutes — State legislatures / Justia