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Canterbury Health Laboratories (CHL) Workplace Drug Testing/Toxicology department is an experienced specialist drug testing and occupational screening unit located in Christchurch.


CHL’s expert workplace drug testing team offers medico-legal and specialist diagnostic medical tests on a national basis, using state of the art equipment and stringent security processes.


CHL Toxicology / Workplace Drug Testing Services:

Workplace environment monitoring
Occupational Health Screening
Biological monitoring of solvent exposure
Workplace Drug Testing
Therapeutic drug monitoring evaluation


Daily requests are received to perform specialist workplace and occupational screening tests from laboratories and workplaces throughout New Zealand. CHL has the biggest ‘catchment’ area of any medical diagnostic laboratory in New Zealand.


Organisations using our services include:


Private Employers
Government Agencies
District Health Boards
Private Medical Practices
Occupational Health and Safety Companies
Occupational Health Doctors



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