Instrument and apparatus system for medical diagnostic use, comprising of an electronic instrument, a disposable cartridge on which the test is performed in conjunction with the instrument and a range of medical devices used for sample collection to provide the test material, all sold to be used as a unit; the aforementioned system is for use in testing for the presence of infection and disease state health markers in human samples in clinical applications, in animal samples in veterinary applications, and in testing for the presence of infection-causing microorganisms in environmental applications