The Patient Recruiting Agency

The Patient Recruiting Agency is a private, commercial-stage clinical research services company focused on patient recruitment and retention for clinical trials. Founded in 1999, the company supports investigators, site networks, CROs, and study sponsors with in-house services spanning campaign strategy, study branding, media placement, patient-facing creative, prescreening, call-center support, and technology-enabled recruitment operations. TPRA's proprietary RADIUS365 platform provides real-time tracking, management, and reporting for patient recruiting, referrals, and retention workflows across studies. The company appears to operate globally, with support for multi-site, multi-country, and multilingual programs across a broad range of therapeutic areas rather than developing its own drug pipeline.