Embodiments described herein relate to a a glucose monitoring system, comprising a glucose sensor, wherein at least part of the glucose sensor is configured to be positioned in contact with interstitial fluid in a body of a user; a transmitter unit coupled to the glucose sensor and configured to process glucose data indicative of a monitored glucose level from the glucose sensor; and a receiver unit comprising a processor and a user interface, wherein the receiver unit is configured to receive the processed glucose data from the transmitter unit; wherein the processor is configured to: detect an alert condition associated with the glucose monitoring system; suppress output of an alarm through the user interface for a predetermined wait period following detecting the alert condition, wherein the predetermined wait period is user-selectable; detect that the alert condition still exists after expiry of the predetermined wait period; and cause the user interface to output the alarm based on the detected alert condition still existing.