Forensic toxicologists use a large number of analytical techniques to determine drugs or poisons relevant to an investigation; a laboratory's ability to conduct routine toxicology analyzes varies depending on the equipment, technical capacity, and experience of the analyst. When necessary, there are specialized toxicology laboratories capable of testing almost any potential toxin or metabolite in almost any type of post-mortem specimen. A laboratory should be accredited to carry out analytical work and must be subject to regular inspections. This will ensure that laboratories can reproduce accurate and reliable results for investigations. All laboratory tests comply with standard operating procedures, results are confirmed to meet standards, and reported results are peer-reviewed by a second toxicologist before being released. Even so, we still use the methods Gettler used in his