Answer:
There are two main types of tests used in forensic drug chemistry i.e presumptive tests and confirmatory tests.
Explanation:
Forensic drug chemistry uses two tests for chemical analyses pf a substance to find out whether any illegal durg is present of not.Presumptive tests are less precise and it is usually colorimetric.Confirmatory tests provide a positive identification and uses instrumental analysis to positively identify the contents of suspected material.
