Healthy volunteers are needed to take part in four Johns Hopkins research studies involving cannabis, one of which involves tobacco and cannabis. Principal investigator for all the studies is Ryan Vandrey, PhD. Brief descriptions of the studies, the amount of compensation, and contact phone numbers follow:
People age 18–55 who are current tobacco users and have a history of occasionally using cannabis (marijuana). Participants will be paid up to $1,730 for study completion. Study involves smoking cannabis and also smoking a tobacco cigarette or vaping with an e-cigarette over seven experimental sessions. Call 410-550-5254 for more information. Protocol #: IRB00220975. Approved Jan. 15, 2020.
Volunteers age 18-50 who have a history of using cannabis (marijuana) but have not used any in the past month. Participants will be paid up to $1,380 for study completion. Study involves consuming a brownie containing THC and/or CBD and other drugs which people are commonly prescribed or get over the counter. For more information, call 410-550-6989. Protocol #: IRB00207237. Approved March 3, 2020.
Volunteers age 18–55 who have a history of occasionally using cannabis (marijuana). Participants will be paid up to $3,230 for study completion. Study involves vaping substances found in cannabis (such as THC) in nine separate experimental sessions, each lasting about seven hours. There is also a separate screening visit lasting about three hours to determine eligibility. Call 410-550-5254 for more information. Protocol #: IRB00182689. Approved May 26, 2020.
Volunteers age 18–55 who have a history of occasionally using cannabis (marijuana). Participants will be paid up to $3,230 for study completion (some participants will be invited to complete a 10th session that would increase earnings to $3,530). Study involves vaping substances found in cannabis (such as THC) in nine separate experimental sessions. There is also a separate screening visit lasting about three hours to determine eligibility. For more information, call 410-550-5254. Protocol #: IRB00085652. Approved June 9, 2020.
