(2017 October, Updated). Nicotine & Metabolites. ARUP Consult. Available online at https://arupconsult.com/content/nicotine-metabolites. Accessed on 2/11/18.

(2018 January 4, Revised). Oral Cavity and Oropharyngeal Cancer. American Cancer Society. Available online at https://www.cancer.org/cancer/oral-cavity-and-oropharyngeal-cancer.php. Accessed on 2/11/18.

Johnson-Davis, K. and McMilin, G. (© 1995–2018). Nicotine and Metabolites, Urine. Mayo Clinic Mayo Medical Laboratories. Available online at https://www.mayomedicallaboratories.com/test-catalog/Clinical+and+Interpretive/82510. Accessed on 2/11/18.

(2017 April 7, Updated). Cotinine Factsheet. Centers for Disease Control and Prevention, National Biomonitoring Program. Available online at https://www.cdc.gov/biomonitoring/Cotinine_FactSheet.html. Accessed on 2/11/18.

(2017 July, Revised). Tobacco, Nicotine, & E-Cigarettes. The National Institute on Drug Abuse Blog Team. Available online at https://teens.drugabuse.gov/drug-facts/tobacco-nicotine-e-cigarettes. Accessed on 2/11/18.

(2017 June, Revised). What are electronic cigarettes?. National Institute on Drug Abuse. Available online at https://www.drugabuse.gov/publications/drugfacts/electronic-cigarettes-e-cigarettes. Accessed on 2/11/18.

Drope, J. et. al. (2017 November). CA Cancer J Clin. 2017 Nov;67(6):449-471. Available online at https://www.ncbi.nlm.nih.gov/pubmed/28961314. Accessed on 2/11/18.

Wu, A. (2006). Tietz Clinical Guide to Laboratory Tests, Fourth Edition. Saunders Elsevier, St. Louis, Missouri. Pp 1326-1327, 1422-1425.

Perez, E. (2007 January 19, Updated). Nicotine. MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/002510.htm. Accessed on 9/9/07.

Wilson, S. et. al. (2007 April 10). The Role of Air Nicotine in Explaining Racial Differences in Cotinine Among Tobacco-Exposed Children. Medscape from CHEST 2007;131(3):856-862 [On-line information]. Available online at http://www.medscape.com/viewarticle/554042. Accessed on 9/9/07.

Barclay, L. (2007 July 20). Comprehensive Smoking Bans May Decrease Secondhand Smoke Exposure. Medscape Medical News [On-line information]. Available online at http://www.medscape.com/viewarticle/560150. Accessed on 9/9/07.

(2007 February). Nicotine and Related Compounds in Urine and Serum/Plasma. ARUP Technical Bulletin [On-line information]. PDF available for download through http://www.aruplab.com. Accessed on 9/9/07.

(1999-2000). Cotinine. CDC Laboratory Procedure Manual [On-line information]. PDF available for download at http://www.cdc.gov/nchs/data/nhanes/frequency/lab06_met_cotinine.pdf.

(2006 July). Nicotine Replacement Therapy. American Lung Association, Nicotine Replacement Therapy [On-line information]. Available online at http://www.lungusa.org/site/apps/s/content.asp?c=dvLUK9O0E&b=34706&ct=66696. Accessed on 10/6/07.

Thomas, Clayton L., Editor (1997). Taber's Cyclopedic Medical Dictionary. F.A. Davis Company, Philadelphia, PA [18th Edition]. Pp. 1299-1300.

Boulton, M., et. al. Reported (2003 May 9). Nicotine Poisoning After Ingestion of Contaminated Ground Beef --- Michigan, 2003. CDC MMWR [On-line information]. Available online at http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5218a3.htm. Accessed on 10/6/07.

Michigan Department of Community Health. Nicotine Factsheet [On-line information] PDF available for download at http://michigan.gov/documents/Nicotine_Factsheet_82361_7.pdf. Accessed November 2007.

Arup Consult. Nicotine & Metabolites. Available online at http://www.arupconsult.com/Topics/NicotineMetabolites.html#tabs=0 through http://www.arupconsult.com. Accessed Nov 2010.

Medicinenet.com. MedTerms: Nicotine. Available online at http://www.medterms.com/script/main/art.asp?articlekey=22807. Accessed Nov 2010.

ARUP Consult. The Physician's Guide to Test Selection and Interpretation. Nicotine and Metabolites. Available online at http://www.arupconsult.com/Topics/NicotineMetabolites.html. Accessed December 2, 2013.

MedlinePlus Medical Encyclopedia. Nicotine Poisoning. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/002510.htm. Last updated January 30, 2013. Accessed December 2, 2013.

Medical Health Tests. Can you beat a cotinine urine test by drinking a lot of water? Available online at http://www.medicalhealthtests.com/askquestion/166/can-you-beat-a-cotinine-urine-test-by-drinking-a-l.html. Published April 1, 2010. Accessed December 2, 2013.

Jen Wieczner. 10 Things E-Cigarettes Won't Tell You. The Wall Street Journal. Available online at http://online.wsj.com/news/articles/SB10001424052702304448204579184052293918312. Published November 10, 2013. Accessed December 2, 2013.

(June 2011) American Lung Association. General Smoking Facts. Available online at http://www.lung.org/stop-smoking/about-smoking/facts-figures/general-smoking-facts.html. Accessed December 2013.

(July 2012) National Institute on Drug Abuse. Tobacco/Nicotine Addiction. Available online at http://www.drugabuse.gov/drugs-abuse/tobacco-addiction-nicotine. Accessed December 2013.

Ralph Magnotti, PhD, DABCC. laboratory tests adjunct board member.