GlySens (San Diego, CA) is testing an implanted glucose monitor that detects and measures glucose in tissue by an oxidation reaction the glucose makes with two enzymes coated on a titanium disc about the diameter of a quarter.  The device, after measuring the oxygen generated, sends a reading to an external monitor (which, eventually, could be a cellphone) every two minutes.  In people, this device would be implanted below the collarbone or in the lower abdomen.  The company is awaiting FDA approval to start the human trial.   MORE