Hand-held test device that is configured to test a retro-reflection of an object in a reflection test mode and a fluorescence of the object in at least one fluorescence test mode, having a housing on which a user interface for selection of the reflection test mode or a fluorescence test mode is arranged, wherein the housing comprises a window at least transparent for light in a predefined wavelength range on a front side , wherein a test arrangement having a white light emitting diode , a UV-light emitting diode , a receiving circuit comprising a photoreceiver and a control unit is provided in the housing , wherein the photoreceiver is not sensitive for incident light having a wavelength of less than 400 nm, wherein the white light emitting diode and the photoreceiver are arranged such that white light (WL) emitted by the white light emitting diode through the window impinges on the object and is reflected from the object and that the reflected light (RL) reflected from the object and entering through the window is received on the photoreceiver , wherein the UV-light emitting diode and the photoreceiver are arranged such that ultraviolet light (UVL) emitted from the UV-light emitting diode through the window impinges on the object and that light (FL) emitted, due to fluorescence, from the object because of excitation with ultraviolet light (UVL) is received on the photoreceiver , wherein the control unit is configured to control the white light emitting diode in the reflection test mode and the UV-light emitting diode in the at least one fluorescence test mode for emission of light and to evaluate a receive signal (E) of the receiving circuit that characterizes the irradiance of the light impinging on the photoreceiver . having a housing on which a user interface for selection of the reflection test mode or a fluorescence test mode is arranged, wherein the housing comprises a window at least transparent for light in a predefined wavelength range on a front side , wherein a test arrangement having a white light emitting diode , a UV-light emitting diode , a receiving circuit comprising a photoreceiver and a control unit is provided in the housing , wherein the photoreceiver is not sensitive for incident light having a wavelength of less than 400 nm, wherein the white light emitting diode and the photoreceiver are arranged such that white light (WL) emitted by the white light emitting diode through the window impinges on the object and is reflected from the object and that the reflected light (RL) reflected from the object and entering through the window is received on the photoreceiver , wherein the UV-light emitting diode and the photoreceiver are arranged such that ultraviolet light (UVL) emitted from the UV-light emitting diode through the window impinges on the object and that light (FL) emitted, due to fluorescence, from the object because of excitation with ultraviolet light (UVL) is received on the photoreceiver , wherein the control unit is configured to control the white light emitting diode in the reflection test mode and the UV-light emitting diode in the at least one fluorescence test mode for emission of light and to evaluate a receive signal (E) of the receiving circuit that characterizes the irradiance of the light impinging on the photoreceiver . <EOS>