The toxicology data gathered during tests of a DUI suspect matter the most to prosecutors who may think the suspect committed other acts as a segue to the original offense. The substances found in the suspect’s bloodstream will also provide more clues regarding their mental state. For instance, Bieber admitted that he smoked a joint at a recording studio before the arrest, but the source of the marijuana is not yet known.
A skilled forensic toxicologist like Dr. Brautbar has an array of other skills to further shed light on any vague facts of the case. These include making recommendations to case handlers on further angles to pursuing and examining patients, as well as establishing cause and effect using all evidence at hand.