A Comparison of Toxicant Exposure among Tobacco, Marijuana, and Co-users

What is the purpose of the study?

The purpose of this study is to measure the health effects of smoking among tobacco smokers, marijuana smokers, and those who smoke both. 

How often are clinic visits?

You will attend at least 1 visit and up to 2 clinical visits. The exact number of visits will be indicated after determining your eligibility for participation.

What will I be doing in the study?

You will be interviewed or asked to complete questionnaires that ask personal questions such as demographics, tobacco and marijuana use history, health history, prescription and over-the-counter medication use, occupational exposure to chemicals and tobacco smoke, and use of alcohol. Cells from your mouth and nose, and urine samples will be collected from you. 

Will I be compensated?

You will receive payment: $25 at your first visit and $50 at your second visit. 

What should I do if I'm interested?

Let us know by calling 612-624-4532 or emailing meier109@umn.edu. Please leave a contact number in your email.

We are looking for...

Healthy men and women who are regular cigarette smokers, marijuana smokers, or both.


If you are interested in the study and would like to participate, contact me!


Tobacco Research Programs
717 Delaware St SE
Minneapolis, MN 55414

Phone: 612-626-5155
Fax: 612-624-4610
Email: tobacco@umn.edu