Advancing clinical research: Be a part of it. Worldwide Clinical Trials conducts overnight and outpatient research studies to evaluate investigational drugs. If you're a healthy, non-smoking adult 18 to 50, you may qualify to participate. Those who qualify will receive up to $9150 in compensation. Study includes 8 stays and payment for screening visit. Worldwide Clinical Trials is located in San Antonio, Texas- call today 210-635-1515