The system (1) has a dosing device (3) e.g. insulin pump, and a data processing apparatus (4) e.g. personal computer, with a blood glucose measuring device (2). The devices have memory units to store data sets of dosing quantities and blood glucose measurements and time values. The apparatus converts the time values of the sets of the device (3) into absolute time values based on comparison of a time value of a time counter of the device (3) to a time value of a time standard. The apparatus synchronizes the sets with one another using the time value of the standard by a linkage. An independent claim is also included for a method for processing analysis results using a blood glucose system for treating a glucose metabolic disorder.