Abstract: The invention relates to methods and apparatus for checking compliance with disulfiram prescription regime. The apparatus includes a device for monitoring, on a regular basis the levels of volatiles in the users breath and a comparator for comparing the test results with anticipated results and producing a non-compliance output when a non-compliance event is detected. The apparatus includes an indicator for providing an indication that carbon disulphide is present in the measured volatiles. The detector of the apparatus detects, at least acetone and carbon disulphide.

Abstract: An apparatus and an associated method for monitoring compliance with a disulfiram prescription regime. A self testing device 10 includes a gas sensor 12, a display 13, an indicating light 14, and a start button 15. An air inlet 16 is joined on the body 11 and a breath tube 12 can be located therein. A clock 20 in association with a random day generator 21 and the display 13, and light 14 determine the daily close rate and the measured sample is compared with expected sensor output by determining whether or not the user has complied with the regime.