The Drug Detection Agency (TDDA)

Trading as: TDDA

Ph: 0508 3784 8378 | Website

TDDA was established in 2005 to provide New Zealand and Australian businesses with end-to-end workplace drug testing, education and policy services and solutions. Its process and technologies provide clients with safer workplaces.

TDDA is a leader in workplace drug and alcohol testing, with around 300 staff operating more than 90 mobile health clinics in 65 locations throughout Australasia. TDDA processes around 250,000 drug tests annually and holds ISO17025:2018 accreditation for workplace drug testing in both Australia and New Zealand. This certification ensures TDDA’s operations meet rigorous international standards in quality management and competence.

Health Tick was established in 2020 to provide workplaces with a true occupational health partner. It provides medical services like preemployment medical assessments, spirometry, and audiometry checks to help companies take a proactive approach to managing the health and wellbeing of a workplace. Utilising TDDA’s clinic locations, and its own occupational health nurses, Health Tick offers an end-to-end solution for occupational health.

Chief executive officer: Glenn Dobson

Chief operating officer: Leon Wood

Group technical manager: Rod Dale

Business development manager: John Tidswell

Brands: The Drug Detection Agency (TDDA), Health Tick

Branches: Please visit to locate the branch closest to you.