ABSTRACT
The analysis of drugs in general has become highly structured and objective by the forensic scientic community through the establishment of a common analytical scheme. The scheme consists of categorizing the different tests used into different classes based on the discriminating capacity of the test. Class C tests consist of simple screening tests, which can be used to presumptively determine if a drug is present in the sample being analyzed. Class B tests consist of separation tests, often in the form of chromatography, which can lead to the identication of a drug through the separation of the drug of interest from other substances within the sample. Class A tests consist of conrmatory tests, which will result in a positive test for only a specic drug. Class A tests are based on complex compound classications.
