Described is a method and system for notifying a user of a high trend in bloodglucose values. If amost recent blood glucose measurement is above a pre-determined high thresholdand is taggedas either a measurement before a meal or made during a fasting period, thenwhether there aretwo or more measurements stored in memory over the previous N number of daysabove thepre-determined high threshold is determined. If the two or more measurementswere tagged asbeing either a measurement before a meal, during a fasting period, or both,then it isdetermined whether the most recent measurement and the two or moremeasurements wereperformed within a time frame of approximately X hours that brackets the giventime duringeach day but over prior days. Upon evaluation that the measurements wereperformed withinthe time frame, then a high trend warning is annunciated.
