Participate in a study It only takes a few simple steps to begin participating in clinical studies at QPS. Learn how to get started below. ApplicationStart with application submission. After 24-48 business hours of processing, we'll contact you for a pre-screening assessment. Enroll Now Study ProcessAfter applying, call or visit the office at 2025 W. Sunshine, L-109 in Springfield. A Recruiting Coordinator will assist you. Learn More HOW TO PARTICIPATEIn order to sign up to participate in clinical studies, you must have a participant application form on file with us. Apply today. Learn MOre ADDITIONAL QUESTIONS? Here you will find the answers to many (if not most) of the questions you may have about participation in a clinical research study. If you have additional questions, please call us at (417) 831-2048.