The invention relates to a diagnostic measuring apparatus for non-invasively detecting at least one physiological parameter of the human body. The measuring apparatus comprises: - a continuum emitter(110) for emitting first electromagnetic radiation, the spectrum of which has a continuum extending over a wavelength range, - a bearing area for bearing a human body part (100) on the measuring apparatus, wherein the bearing area is designed such that the body part (100) is irradiated with the first electromagnetic radiation, wherein the first electromagnetic radiation is emitted by transmission, scattering and/or reflection as second electromagnetic radiation from the tissue of the body part (100), - a detector (102; 104) for detecting at least one spectral component of the second electromagnetic radiation, - a spectral decomposition unit (106; 114; 116; ; 402) for spectrally selecting wavelength ranges of the first and/or second electromagnetic radiation. Moreover, the invention relates to a diagnostic measuring apparatus for non-invasively detecting at least one physiological parameter of the human body, comprising: - a sensor having a matrix-shaped arrangement of measuring electrodes for carrying out an electrolyte movement measurement and a signal processing device connected to the sensor, wherein the signal processing device is designed to carry out a spatially and temporally resolved measurement of electrical potential values at the surface of a human body part via the sensor.