About Us

The Drug Detection Agency (TDDA) is a leader in workplace substance testing with more than 300 staff, 90 mobile health clinics, 65 locations throughout Australasia. TDDA was established in 2005 to provide Australian and New Zealand businesses with end-to-end workplace substance testing, education and policy services. TDDA holds ISO17025 accreditation for workplace substance testing in both AU and NZ. Refer to the IANZ and NATA websites for TDDA’s full accreditation details. As members of the National Drug and Alcohol Screening Association (NDASA) and the California Narcotic Officers Association (CNOA), TDDA closely follows and acts on global drug trends. Learn more about TDDA by visiting https://tdda.com/.