The WADA Prohibited List is specifically designed for urine analysis and refers to substances found in urine (i.e. after the drug has passed through the body). The body may convert some or all of the drug to other compounds as it passes through the body.
Not all of the substances on the WADA prohibited list are able to be present in a supplement product.
Additionally, the WADA list of prohibited substances is not definitive. By necessity the list identifies classes of prohibited substances, such as anabolic agents and related substances and prohibited methods only, rather than publishing a full list of substances. When analyzing a supplement product for contaminants the Prohibited List is unable to act as a checklist for all prohibited substances against which products should be screened — supplement analysis cannot guard against contamination using untried, untested and unknown designer drugs.
Although it is not possible to test for all substances on the WADA list, LGC's experience in testing over 50,000+ samples and its' close relationship with the anti-doping community, it has been possible to identify a list that will maintain product integrity.