RJL Systems

RJL Systems is a private U.S. medical device company focused on bioelectrical impedance analysis (BIA) for body composition and fluid assessment. Founded in 1979, the company develops and sells FDA-approved Class II BIA analyzers, associated software, electrodes, and accessories used by clinicians, researchers, wellness professionals, hospitals, universities, and government customers. Its core commercial products include the Quantum analyzer family for whole-body and segmental assessment, measuring parameters such as fat mass, lean mass, total body water, hydration, and phase angle. RJL Systems positions itself as a long-established pioneer in BIA and emphasizes clinically validated, non-invasive, portable body composition analysis rather than therapeutics or drug development.