Abstract: A device for measuring characteristics of fluid excreted from an organ of the human body, including electrodes; a power source; and a data processing system including a power regulation module and a measurement module. The electrodes are connected to the power source via the data processing system and are arranged in an array in contact of the human body in vicinity of the fluid excreting organ. The array characterized by a predefined spatial arrangement of the electrodes that is related to the form of the fluid excreting organ. The power regulation module is arranged to supply the electrodes with an electric current characterized by predefined parameters and the measurement module is arranged to measure characteristics of the excreted fluid from evolved potentials on the human body due to the electric current, in relation to the predefined spatial arrangement of the electrodes in the array.