Dexcom G6 User Manual page 306

Hypoglycemia and Hyperglycemia Alerts
Low and High Glucose Alerts
The ability of the G6 to detect high and low glucose levels is assessed by comparing
G6 results to YSI results at low and high blood glucose levels and determining if the
alert may have sounded. The G6 and YSI values were compared by pairing the G6
reading and the YSI value within before or after 15 minutes of each other. We suggest
that you ask your doctor what alert settings would be best for you.
The Low Glucose Alert
Estimates of how well the adjustable Low Glucose Alert performs are presented in
Tables 5-A and 5-B. Tables 5-A and 5-B represent the hypoglycemic alert evaluation
within 15 minutes of the YSI value in the study and the hypoglycemic event evaluation
within 15 minutes of each hypoglycemic alert for adults and pediatrics, respectively.
Hypoglycemic Alert Rate
The Alert Rate shows how often the alert is right or wrong. The True Alert Rate is the
% of time the device alarmed when the blood glucose level was at or below the alert
setting within 15 minutes before or after the device alarmed. The False Alert Rate is
the % of time the device alarmed when the blood glucose level was above the alert
setting within 15 minutes before or after the device alarmed.
For example, if you set the Low Glucose Alert to 70 mg/dL and your alarm sounds,
how often can you expect your blood sugar to actually be low? Based on results for
adults in the G6 Study (Table 5-A), when your alarm sounds, you can expect your blood
sugar to be below 70 mg/dL approximately 85.5% of the time and above 70 mg/dL
approximately 14.5% of the time within the 15 minute period before or after your alarm
sounds.
When the hypoglycemic alert rate was set at 55 mg/dL, and an alert was provided,
glucose was <70 mg/dL 85% of the time within 15 minutes of the alert. (Data not
presented in table.)
When the hypoglycemic alert rate was set at 60 mg/dl, and an alert was provided,
glucose was <70 mg/dl 87% of the time within 15 minutes of the alert. (Data not
presented in table.)
Dexcom G6 ® System User Guide
Appendix F: Technical Information
304