PhenX Toolkit. (2025 April 27).
Amount, Type, and Frequency of Recent Use of Nicotine Products.
https://www.phenxtoolkit.org/protocols/view/720101 PhenX Toolkit. (2025 April 27).
Expired Carbon Monoxide.
https://www.phenxtoolkit.org/protocols/view/720301 PhenX Toolkit. (2025 April 27).
Cue Reactions to Tobacco Stimuli.
https://www.phenxtoolkit.org/protocols/view/720501 PhenX Toolkit. (2025 April 27).
Withdrawal from Tobacco Use.
https://www.phenxtoolkit.org/protocols/view/721001 PhenX Toolkit. (2025 April 27).
Pregnancy Status and Tobacco Use.
https://www.phenxtoolkit.org/protocols/view/720802 PhenX Toolkit. (2025 April 27).
Flavor Preference - Electronic Nicotine Products - Adults.
https://www.phenxtoolkit.org/protocols/view/720603 PhenX Toolkit. (2025 April 27).
Flavor Preference - electronic nicotine products - Youth.
https://www.phenxtoolkit.org/protocols/view/720604 PhenX Toolkit. (2025 April 27).
Mother and Baby Health.
https://www.phenxtoolkit.org/protocols/view/720902 PhenX Toolkit. (2025 April 27).
Biomarker of exposure to nicotine-containing products - Urine.
https://www.phenxtoolkit.org/protocols/view/91707 PhenX Toolkit. (2025 April 27).
Biomarker of exposure to nicotine-containing products - Saliva.
https://www.phenxtoolkit.org/protocols/view/91708 PhenX Toolkit. (2025 April 27).
Biomarker of exposure to nicotine-containing products - Serum.
https://www.phenxtoolkit.org/protocols/view/91709 PhenX Toolkit. (2025 April 27).
NNAL in Urine.
https://www.phenxtoolkit.org/protocols/view/720403 PhenX Toolkit. (2025 April 27).
Ethnicity and Race.
https://www.phenxtoolkit.org/protocols/view/11901 PhenX Toolkit. (2025 April 27).
Gender Identity.
https://www.phenxtoolkit.org/protocols/view/11801 PhenX Toolkit. (2025 April 27).
Current Marital Status.
https://www.phenxtoolkit.org/protocols/view/10903 PhenX Toolkit. (2025 April 27).
Educational Attainment - Individual.
https://www.phenxtoolkit.org/protocols/view/11002 PhenX Toolkit. (2025 April 27).
Current Employment Status.
https://www.phenxtoolkit.org/protocols/view/11301 PhenX Toolkit. (2025 April 27).
Cigarette Nicotine Dependence.
https://www.phenxtoolkit.org/protocols/view/31001 PhenX Toolkit. (2025 April 27).
Electronic Nicotine Product Device Type.
https://www.phenxtoolkit.org/protocols/view/760102 PhenX Toolkit. (2025 April 27).
Current Age.
https://www.phenxtoolkit.org/protocols/view/10102 PhenX Toolkit. (2025 April 27).
Use of Tobacco Products.
https://www.phenxtoolkit.org/protocols/view/741402