The traditional method of measuring glucose levels requires a fingerstick using a blood glucose meter (BGM). BGMs provide a glucose reading at a single point in time. The key difference between Dexcom CGM and BGM is that Dexcom CGM provides glucose readings throughout the day and night, including glucose speed and direction arrows that empower wearers with more information for more informed decision making*. Finally, Dexcom CGM is designed with alerts to warn the wearer of glucose highs and lows during critical times like playing, sleeping or exercising to help wearers catch high and lows before they become critical.
Here is an example of how Dexcom CGM information could impact glucose management decisions:
BLOOD GLUCOSE METER (BGM) READING: 105
CONTINUOUS GLUCOSE MONITOR (CGM) READING: 102
(The double arrows signal a rapid decline in glucose)
Based on the blood glucose meter (BGM) reading of 105, this person is likely to decide that no action is required. But, with a similar glucose level reading on the Dexcom CGM and two arrows facing down, the patient might decide to eat some carbohydrates to avoid having a hypoglycemic event.
*Fingerstick required prior to making treatment decisions