ISO 16000-19:2012 describes the measurement strategy for the detection of fungi in indoor environments.ISO 16000-19:2012 describes suitable sampling and analysis methods together with a description of the applicability and the interpretation of the measurement results to maximize the comparability of the measured data obtained for a given measurement objective. It does not include details on recording building characteristics or field inspections by qualified professionals which have to take place prior to any microbiological measurement.ISO 16000-19:2012 is not applicable to a detailed description of the building physics- and building-engineering-related procedures applicable to field inspections. The methods and procedures presented do not allow quantitative exposure assessment with regard to the room occupants.The application of ISO 16000-19:2012 presupposes the knowledge of ISO 16000-1.