The present invention relates to a method for the diagnosis of prostate carcinoma comprising the determination of annexin A3, particularly of extracellular annexin A3 with highly specific antibodies, particularly with monoclonal antibodies. In particular, software on the portable device will automatically execute on the host computing device after the host computing device recognizes the presence of the portable device. The recesses of the first and second structural components form a continuous cylindrical conductive path when the first and second structural components are mated. Furthermore, the camera base unit, by providing a pass-through connection and placement guides that mate with the camera, assures that an intuitive placement of the camera on the camera base unit also enables an electronic connection between the camera and the host. A detecting device nay detect the power supply to the CPU, and may actuate the control circuit to couple the auxiliary power circuit to energize the CPU when the primary power circuit is unable to energize the CPU, or when the electric power supplied to the CPU is cut off, or when the power supply is less then the required value.