Abbott FreeStyle Libre 2 - Page 209

High Glucose Alarm Performance
Tables 5c and 5d display the percentages for these parameters:
True Alarm Rate
Tells you: When you got a high glucose alarm, were you actually high?
Denition: Percentage of time the alarm issued and blood glucose was above the alarm level within
15 minutes before or after the alarm.
False Alarm Rate
Tells you: Did you get a high glucose alarm that you shouldn’t have?
Denition: Percentage of time the alarm issued and blood glucose was not above the alarm level
within 15 minutes before or after the alarm.
Detection Rate
Tells you: When you were high, did you get a high glucose alarm?
Denition: Percentage of time blood glucose was above the alarm level and the alarm issued within
15 minutes before or after the glucose event.
Missed Detection Rate
Tells you: When you were high, did you miss a high glucose alarm?
Denition: Amount of time blood glucose was above the alarm level and the alarm didn’t issue within
15 minutes before or after the glucose event.
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