A method of notifying a user of high or low trends in blood glucose values obtained with a diabetes treatment unit that has a microprocessor coupled to a display, memory and user interface buttons, the procedure comprising: performing with the microprocessor a plurality of blood glucose measurements of the user; keep in memory the plurality of blood glucose measurements; determine if a more recent blood glucose measurement at a given time during a day is above a second threshold and if the most recent blood glucose measurement at a given time during a day is labeled as a measurement made before a food or a measurement made during a fasting period; After the determination is true, evaluate with the microprocessor if at least one blood glucose measurement of the plurality of blood glucose measurements taken within a period of time of X hours around the given time of the blood glucose measurement more recent over a period of N recent days is higher than the second threshold; and after the evaluation stage is achieved, announce that in the same period of time with respect to the number N of days, the plurality of blood glucose measurements indicates a tendency for blood glucose to exceed the second threshold.Un procedimiento de notificación a un usuario de tendencias altas o bajas en valores de glucosa en sangre obtenidos con una unidad de tratamiento de la diabetes que tiene un microprocesador acoplado a un visualizador, memoria y botones de interfaz de usuario, comprendiendo el procedimiento: realizar con el microprocesador una pluralidad de mediciones de glucosa en sangre del usuario; guardar en la memoria la pluralidad de mediciones de glucosa en sangre; determinar si una medición de glucosa en sangre más reciente en un momento dado durante un día está por encima de un segundo umbral y si la medición de glucosa en sangre más reciente en un momento dado durante un día está etiquetada como una medición hecha antes de una comida o una medición hecha durante un periodo