Abstract: A handheld medical logging apparatus for recording and logging data related to a person's blood glucose level comprises measuring means adapted to measure a glucose level, one or more buttons, and control circuitry coupled to the buttons. The control circuitry is adapted to, in response to an activation of a specific button, directly enter an event logging mode, in which mode an occurrence of events may be recorded in the apparatus, wherein each event may affect the blood glucose level and is represented by a predetermined code. The control circuitry is further, in the event logging mode, adapted to interpret activations of the buttons as the code representing an event and create a signal indicative of the occurred event. The apparatus further comprises a memory coupled to the control circuitry and adapted to receive the signal, and in response thereof record the occurrence of the event.