Before revision: No device has yet entered the medical market, <ref group="nb">A recent development has been approved by the FDA allowing a new CGM called EverSense which is a 90 day glucose monitor using fluorescent biosensors.
After revision: No device has yet entered the medical market, No fluorescent biosensor has yet entered the medical market, however, in the market for research tools several fluorescent biosensors are present, such as a kit using Vibrio fischeri but, due to the prevalence of diabetes, it is the prime drive in the construction of fluorescent biosensors.