Protective coverings are provided for hand-held medical devices that have a measuring port for a disposable analytical test element. The coverings also include a sleeve having a reception opening and can be slipped over the devices to at least partially enclose the devices in a usable protected state. The coverings further include a test element adapter formed as an integral part of the sleeve to receive the test element in alignment with a measuring port, where the sleeve includes the test element adapter and is arranged as a sealing barrier between the test element and the device port in a protected state.