SAN FRANCISCO – Fingerstick-free continuous glucose monitors (CGMs) are a fast-growing segment, where Abbott has a first mover advantage. Dexcom Inc., of San Diego, gained its own label last year on this front and took the J.P. Morgan Healthcare Conference to highlight the perceived advantage of its G6 system over Chicago-based Abbott Laboratories' Freestyle Libre. These include the need for actively, rather than passively, gathering blood glucose data and the absence of alarms.