A handheld medical device for body fluid analysis such as to measure an analyte concentration, for example glucose, in a body fluid such as blood or interstitial fluid by a patient or caregiver. The device comprises a mechanical assembly having a transport unit for consumable analytical elements, a display unit, a sensor for analyzing a body fluid sample obtained by a lancet prick, a memory for storing a series of measurement results, a first actuating element, the actuation of which transfers the device into a first active state, activates the mechanical assembly and prepares a measurement. In the first active state, a measurement is started by the actuation of one of the actuating elements, and a second actuating element, the actuation of which transfers the device into a second active state. The display unit is switched on by the actuation of the second actuating element, without activating the mechanical assembly.
