A end result indicating the absence of detectable ranges of particular substances or their metabolites inside a pattern submitted for evaluation. This final result signifies that the person offering the pattern has both abstained from utilizing the medication being examined for or that any prior use occurred exterior the detection window of the testing methodology employed.
Such findings are essential for pre-employment screening, office security packages, and authorized or medical contexts. A transparent end result facilitates belief, ensures compliance with rules, and promotes accountable habits. Traditionally, these analyses have advanced from easy visible assessments to stylish instrumental methods, growing accuracy and sensitivity in substance detection.
