A legal or procedural restriction affecting the administration, interpretation, or utilization of results stemming from analyses designed to detect the presence of prohibited substances. For example, a statute might invalidate test outcomes if proper chain-of-custody protocols are not followed meticulously.
Such limitations safeguard individual rights, ensuring fairness and accuracy in settings such as employment, parole, and athletic competitions. Historically, these protections have evolved in response to concerns about privacy, accuracy, and potential for discriminatory practices.