Available Studies Study # 49122 Healthy, Loose and/or MST users, Smokeless Tobacco User Men & Women, 22 - 65 years , ages 22 - 65 years old. Compensation up to $3,500 This study will consist 5-day at home product trial run plus a 7-day inhouse stay See Details Sign Up QPS has an almost constant supply of new and ongoing clinical research studies that are seeking healthy participants. Please check out the studies listed above to see if there is one that may be right for you. Please visit this page often as we add new clinical research studies on a weekly basis. To see more information about a particular study, please click on the “See Details” link at the bottom of each box. If you’ve already submitted an application and find a clinical research study that you would like to enroll in, please call to speak to a Recruiting Coordinator at 417-831-2048 between 8:00 a.m. – 5:00 p.m. Monday thru Friday. Signup to Pre-Qualify "*" indicates required fields Study # Name* First Last Email* PhoneBirth Date* MM slash DD slash YYYY CAPTCHACommentsThis field is for validation purposes and should be left unchanged. Δ CURRENT PARTICIPANT? If you are already participating in a trial and would like to review the details, please visit our ongoing studies page.