Self-schedule for a prescreen or study participation
Schedule Yourself for a prescreen
A prescreen may either be in person or on the phone with a professional patient recruiter to help determine if you will qualify to participate in a study. In-person prescreens often consist of lab work and vitals to see if you qualify. Phone prescreens, which are often used for mental and behavioral health studies, will help determine your eligibility.
The type of appointment you are scheduling – either a phone or in-person prescreen – will be clearly marked on the scheduling system. There is no cost to prescreen and no insurance necessary. Some prescreens may provide compensation for your time.
Healthy Volunteers
Metabolic Screening
Phone Self-Scheduler
Schedule Yourself to Participate in a Study
A study appointment can be made at your convenience online. The scheduling system will have a clear description of criteria which may include or exclude from a study. We recommend that after scheduling you call 210-949-0122, ext. 290 to verify your eligibility. There is no cost to participate in a study and no insurance is necessary. Patients who qualify to screen for a study may receive compensation for time.
GERD Self-Scheduler
Weight-Loss Self-Scheduler
Type 2 Diabetes Self-Scheduler
Renal Impairment Self-Scheduler
Bunion Self-Scheduler
Adult ADHD Self-Scheduler
One-Visit Healthy Volunteers Self-Scheduler
Type 2 Diabetes with Obesity Self-Scheduler
Gout Self-Scheduler
Lupus Self-Scheduler
Malaria Vaccine Self-Scheduler
Flu/COVID-19 Vaccine Self-Scheduler
Pediatric ADHD Self-Scheduler
Flu Vaccine Self-Scheduler
COVID/RSV Self-Scheduler
High Cholesterol Self-Scheduler
Type 1 Diabetes Self-Scheduler
Osteoarthritis of the Knee Self-Scheduler
About Us
In addition to free screenings, CTT conducts studies in many therapeutic areas that impact our community such as obesity, diabetes, fatty liver, PTSD and vaccines.