In June 1999 the FDA approved the first continuous glucose monitor for diabetic intervention. We have come along way since 1999. Continuous glucose monitors (CGMs) come in 2 different varieties: real-time CGM, and intermittent/“flash” monitor devices. The use of these devices in pregnancy has exponentially grown. In this episode, we will summarize the key findings from the landmark study, published in 2017 in patients with Type I diabetes in pregnancy (the CONCEPTT study). Is there evidence supporting the use of these devices for gestational diabetes? Has the FDA cleared any of these devices for use in pregnancy? We will answer these questions and much more in this episode.