Do you use cocaine or opioids?

Researchers at the Johns Hopkins Bayview Medical Campus are seeking healthy participants for a phenotyping research study. Participation requires two to three visits to the Johns Hopkins Bayview campus. Compensation of up to $200 is provided; total study time is approximately four hours. Participation is confidential.

Call 443-692-7805‬ or click here.

Principal Investigator: Cecilia Bergeria, PhD

PROTOCOL #: IRB00322566


This clinical research study at the Johns Hopkins Bayview Campus involves a screening and two study visits during which the participant completes assessments related to health and substance use. The goal of the study is to develop a characterization of substance use disorder.

You must be seeking treatment for opioid use or have started treatment for opioid use within the past six months, and be at least 18 years of age to participate.

Participation requires one screening visit and two study visits (1.5 to 2.5 hours each).

Duration of the study is about one month.

Compensation up to $200 may be provided.