What are the permitted levels for the testable drugs and how is it determined if the result is a verified positive?
For cocaine, cannabis, opioids and amphetamines – below the relevant “confirmatory target concentrations” set out in Australian/NZ Standard 4308: 2001 for urine testing or Australian/NZ Standard 4760: 2006 for oral fluid testing, as confirmed by an accredited laboratory and verified by an appropriately qualified medical practitioner or medical review officer (MRO) and for alcohol – a breath alcohol content (BAC) of below 0.02%. The MRO plays a central role in ensuring the integrity and probity of the testing process and chain-of-custody of any initial positives sent to an approved laboratory for confirmation. A further important role of the MRO is to uphold the confidentiality of any ensuing results sent from the laboratory. The MRO will review all circumstances of a confirmed positive drug test result and determine if: • the result as reported, lacks legitimate medical explanation, and report the result as positive or • legitimate medical explanation exists, substantiate and document
