The invention relates to a blood glucose system (1) for treating a glucose metabolic disorder, comprising a dosing device (3) having an integrated time counter for generating relative time values and a memory unit, a blood glucose measuring device (2) having an integrated time standard and a memory unit, and a data processing apparatus (4) for processing data sets of the dosing device (3) and the blood glucose measuring device (2). According to the invention, the data processing apparatus (4) is implemented to synchronize the data sets of the dosing device (3) and the data sets of the blood glucose measuring device (2) with one another using the time value of a time standard by an assigned linkage.
