The invention relates to a method, a device (11) and a system (12) for measuring and transmitting functional values of a patient's body, especially of blood sugar values. The aim of the invention is to provide a method for measuring and transmitting functional values of the body, which is user-friendly and allows for a rapid and simple evaluation of the functional values measured. According to the invention, a measuring device (1) measures at least one functional value of the body or acquires a measured value (2) of a functional value. The measuring device (1) transmits an information (3) specific for the measured value to a mobile transmitter/receiver device (4), preferably a mobile phone, via a wireless interface. The mobile transmitter/receiver device (4) transmits the information (3) specific for the measured value in the form of an electronic message of a telecommunication service in a standard protocol to a mobile radio network (5).
