The Free Online Directory Listings at GPGP.net are your best source of volunteer opportunities for healthy adults. Volunteer as a research subject in clinical trials and earn money. Use the Directory Listing to find opportunities in your area. We have something for everyone from MRI studies that scan your brain to Phase I research studies and plasma donation.

If you are a researcher and would like to have your study location listed, please send an email to Biotrax1@aol.com