Does Ketamine Show in Drug Tests in Australia? A Complete Guide
Whether ketamine shows up in a drug test depends on the type and scope of the test. In Australia, ketamine is typically not detected in standard workplace and roadside drug tests, but it can be screened for in specialised extended panels. This distinction is crucial for understanding Australian testing policy.
Standard Testing vs. Extended Panels
Routine drug testing in Australia follows the AS/NZS 4760:2019 standard, which covers the most commonly abused substances. In this standard panel, ketamine is not included. This means that in routine pre-employment screening or most roadside tests, ketamine will not trigger a positive result.
However, laboratories can add ketamine to an “extended panel” upon request, which requires an additional fee. Some specialised testing services (such as Sullivan Nicolaides Pathology) include ketamine as part of their standard panel for urine and oral fluid testing, which indicates that the scope of services varies between laboratories.
The Reality of Roadside Drug Testing
For drivers, one key fact stands out: roadside drug testing (RDT) in Australia typically does not test for ketamine. A NSW Parliament document states explicitly that “prescription substances such as ketamine are not within the scope of testing for RDT.”
This creates a policy contradiction: ketamine is a dissociative drug that causes effects including “feeling detached from your body or environment, visual and auditory hallucinations, blurred vision, confusion, and clumsiness” — all of which impair driving ability. Despite causing serious impairment, standard saliva roadside tests will not catch it.
However, police are not entirely without options. If an officer suspects someone is impaired, they can require a impairment test (such as walking a straight line or standing on one leg). Even if the saliva test is negative, they can send the person for blood or urine testing. This means that if you show obvious signs of impairment, you may still face further testing and legal consequences even if the roadside saliva test does not detect ketamine.
How Long Ketamine Remains Detectable
If a test does include ketamine, the detection window varies by sample type:
- Urine: The standard detection window is 3–5 days. However, for heavy long-term users, one study showed urine samples could remain positive after 22 to 96 days. Another study on therapeutic dosing found norketamine (the primary metabolite) was detectable in urine for up to 14 days.
- Blood: Typically 24 hours to 3–4 days.
- Saliva: The window is short, approximately 24 hours, and ketamine “does not show well or at all in saliva tests.”
- Hair: Detectable for up to 3 to 4 months, representing the longest detection window.
The Australian Context
In Australia, ketamine has a dual identity: it is both a legal Schedule 8 prescription medicine (used for anaesthesia and treatment-resistant depression) and an abused “party drug.” This dual identity complicates testing policy. Some professional sectors, such as the National Rugby League (NRL) , explicitly include ketamine in their drug testing policies. Similarly, for impairment assessments of medical practitioners, ketamine is among the substances considered.
Summary
For most people in Australia undergoing standard workplace drug screening or roadside testing, ketamine will not be detected. However, this does not mean using ketamine carries no risk. If you show obvious signs of impairment, police can conduct impairment tests and require blood or urine testing. Furthermore, if your employer or regulatory body requires an extended panel that includes ketamine (for example, in professional sports or medical regulatory environments), it will be detected. Ketamine’s detection window ranges from 24 hours in saliva to weeks or even months in urine, depending on usage patterns and individual metabolism.