It is not superior to the old reliable tests once performed by Gettler, but the new technology can isolate compounds and substances much more efficiently, but it is equivalent to the old methods used. Toxicology is an important field of chemistry; involves important information about our lives. Without the development of this branch of science, along with forensic medicine, many of us would not be here today. Toxicologists must have a lot of experience and training in this field, be extremely methodical, and must bear the burden of deciding what constitutes a poison and how it can be harmful to humans.