A confirmatory test for the presence of drugs or poisons is done

Question

Quizplus · Accepted Answer

Confirmatory tests require a high level of accuracy and sensitivity, which can only be achieved through the use of sophisticated laboratory equipment such as gas chromatography/mass spectrometry (GC/MS). This type of equipment is typically found in crime labs, and requires specialized training to operate. Testing at the crime scene, by contrast, is typically limited to preliminary screening tests which may be less accurate and may require confirmation by more precise equipment in the lab. Alternative light sources may be used to detect other types of evidence (such as bloodstains or fingerprints), but are not typically used to confirm the presence of drugs or poisons. Forensic scientists may conduct confirmatory tests in the lab, but this is not typically done at the crime scene.

A Confirmatory Test for the Presence of Drugs or Poisons