Continuous Glucose Monitors

Using CGM to generate a clinical diagnosis of insulin resistance is premature given the current evidence. There is no validated consensus on which CGM values predict insulin resistance or diabetes transition. The monitor uses a small needle under the skin to take glucose readings at intervals. A continuous glucose monitor is a patch worn on the arm that measures blood glucose continuously throughout the day. The first 14 days of CGM use may be unreliable for baseline assessment because wearing a CGM changes eating behavior. Different CGM devices placed on the same patient can produce discordant readings. A continuous blood glucose monitor is worn on the arm. The device can show glucose patterns over a 24-hour period and multi-day trends. The CGM patch can remain in place for several days. CGMs are not currently recommended as a primary diagnostic tool for insulin resistance. Continuous glucose monitoring is described as an easy, low-cost way to start measuring bodily responses to inputs. CGM may be useful as a behavior-change tool rather than as a diagnostic instrument.