A CGM works through a tiny sensor inserted under your skin, usually on your belly or arm. The sensor measures your interstitial glucose level, which is the glucose found in the fluid between the cells. The sensor tests glucose every few minutes. A transmitter wirelessly sends the information to a monitor.
How does a glucometer sensor work?
Most commercialized implantable glucose sensors are based on a glucose–enzyme reaction with their products detected by an amperometric sensor. The enzyme, usually a GOX, is immobilized on an electrode to provide a redox reaction with glucose and generate a current at the electrodes.
When used, a tiny sensor wire is inserted just underneath a persons skin using an automatic applicator. A small, reusable transmitter connects to the sensor wire and sends real-time readings wirelessly to a receiver, so that the user can view glucose information.
How do you use a glucose sensor?
Sensors are typically inserted in the abdominal or upper buttock area, and tape is used to hold them in place. The sensor measures the level of glucose in the interstitial fluid (fluid surrounding the cell) every 10 seconds and changes it into an electrical signal.
What is the purpose of wiping the first drop of blood?
Wipe away the first drop of blood using gauze to remove tissue fluid contamination.