Join Our Studies – Chicago Click the icons below to take the survey to see if you’re eligible! You can take the survey for as many studies as you’d like. We will contact you for more information if you are eligible. Test a new website for youth with HIV and earn up to $345. On PrEP? Interested in PrEP? Make up to $300 to give us your opinion on a 4-week counseling program for gay and bisexual men ages 16-24 to improve PrEP adherence. Now fully remote! Help test two sexual health mobile apps meant to increase HIV testing and PrEP uptake for gay and bisexual men ages 15-29. Test technology to support sexual health and earn up to $275!