Continuous blood glucose monitors (CGMs) provide frequent predictive readings of blood sugar levels. These readings can help you be more proactive in responding to highs, lows, and situations where your blood sugar levels are changing rapidly. Use this comparison tool as a guide to learn more about the features and benefits of your current monitor or to find a new one. To recommend a monitor not featured here, or if you are a monitor company representative seeking to update product information, contact [email protected]
Sensor Life - The expiration dates of sensors are normally several days but vary depending on which CGM you use. Where you place the sensor can also influence how long it can be used. It should remain motionless in the subcutaneous tissue (under your skin) so placing it in an area that moves a lot (like your thigh) isnï¿½t a good idea.
Calibration Frequency - It is important to calibrate or code your meter to maintain its accuracy. With most CGMs this needs to be done when you first start using the monitor and when you change your sensor. It is also a good idea to check the calibration on your CGM at periodic intervals. Your specific CGM will have instructions on how often to calibrate.
Sampling Interval - This refers to how often the monitor measures your glucose levels. If the interval time is shorter, you receive more up-to-date information. If you have a longer sampling interval information received from your CGM will not be as current. It is important to remember that CGM is not a replacement for fingerstick testing and that you should still test this way ï¿½ especially when you first start using a CGM.
Probe Size - This measurement is the length of the needle multiplied by the gauge (thickness) of the needle. Smaller probe sizes tend to decrease the pain associated with sensor application. Keep in mind that changing your sensor site can also have an impact on the pain associated with placing the sensor.
Connects to Insulin Pump - Some CGMs are able to connect to an insulin pump allowing insulin to be administered without a separate injection. This feature makes injecting insulin quicker and less painful. In order to keep both systems (CGM and insulin pump) functioning smoothly, make sure you follow the instructions and keep both items charged. Many people with diabetes also keep an emergency stash of syringes, insulin and other supplies with them in the event they canï¿½t use their pump or it malfunctions.