Materials submitted for asbestos analysis are performed in accordance with the National Institute for Occupational Safety and Health (NIOSH) Method 9002, asbestos (bulk) by polarized light microscope (PLM) and dispersion staining techniques. Results are returned with the percentage and type of asbestos found as well as the identification of other fibres present within the sample. If asbestos fibres are not present within the sample, the sample is listed as no asbestos detected.