How does DexCom CGM work?

DexCom Continuous Glucose Monitors, or CGMs, are designed to provide real-time glucose readings for individuals managing diabetes. The system consists of a small sensor, a transmitter, and a display device, which could be a smartphone, smartwatch, or a dedicated receiver. The process begins with the insertion of a tiny sensor under the skin, typically in the abdomen or upper arm. This sensor measures glucose levels in the interstitial fluid, which is the fluid between the cells. Glucose levels in the interstitial fluid closely correlate with blood glucose levels, allowing for accurate monitoring. The sensor remains in place for several days and is designed to be worn comfortably. Once the sensor is in place, it connects wirelessly to a transmitter that sends glucose data to the display device at regular intervals, usually every five minutes. This allows individuals to see their glucose levels in real-time, helping them make informed decisions regarding their diet, activity, and insulin use. Users can also set customizable alerts to notify them when their glucose levels are too high or too low, enabling timely interventions if necessary. The data can also be analyzed over time, helping users and their healthcare providers identify patterns that can optimize diabetes management. Additionally, some DexCom systems support data sharing with family members, friends, or healthcare professionals, which can provide additional support and guidance. For more specific information about the features, setup, and usage of the DexCom CGM system, it might be beneficial to refer to the current information available on the official DexCom website or other resources.