About BIA

Bioelectrical Impedance Analysis (BIA) is a scientifically validated, non-invasive method that measures body composition by sending a low-level electrical current through the body; quick, painless, and requiring no needles or bloodwork. Unlike traditional methods that only estimate weight or BMI, BIA reveals the full picture: fat mass, lean body mass, body water, and more, with the precision to track meaningful changes over time. Since 1981, when RJL Systems built the first commercial BIA device, we've spent decades refining this technology to deliver the most precise, reliable, and repeatable data available; providing insight critical to healthcare analysis, wellness programs, and clinical research.

Speed and accuracy are everything when making clinical decisions or optimizing performance. RJL Systems BIA devices provide immediate results that support everything from chronic disease management to weight loss, athletic performance, and personalized wellness. In just seconds, you can monitor hydration, muscle mass, and metabolic shifts—giving patients and professionals clear benchmarks for progress and outcome. That means smarter care, stronger engagement, and better results at every level.

One of BIA’s greatest strengths lies in its ability to easily integrate into daily routines—whether in a clinic, lab, or performance center. RJL Systems devices and software are designed to deliver fast, repeatable measurements that reduce variability and improve consistency across patient visits, study protocols, or client sessions. With digital data capture, exportable reports, and software compatibility, BIA becomes a natural extension of care or research—not an interruption. This consistency enables longitudinal tracking, a more reliable outcome, and sharper insight into how interventions are truly working over time.