Zynex, Inc. reported it has started enrollments in a clinical trial aimed at further characterizing the performance of its fluid monitoring system, CM-1500. The study, conducted at Vitalant Research Institute (the research arm of Vitalant), tracks changes in the device's patented Relative Index during apheresis blood donation procedures. The company obtained FDA clearance of the fluid monitoring system in February 2020.

The CM-1500 is a non-invasive monitor intended to monitor patients' fluid balance in hospitals and surgical centers. The company's focus in 2021 has been on the clinical evidence supporting the CM-1500 and preparing the next generation device (CM-1600) for submission to the FDA.