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