The drugs shown here (marijuana, cocaine, etc. are a few types of drugs forensics toxicologists come in contact with every day. These drugs may appear in a victim's body due to their own doing (drug addiction), or an occurrence better known today as ""date rape"".
Different tests are issued to find drugs in a victim's system, such as blood tests. The evidence these scientists test can be from forensics pathologists during an autopsy or crime scene investigators at the crime scene. Forensics toxicologists use chemical reagents and precise methodologies to determine the presence of drugs in a victim's body.