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Specialties inside the lab
DNA (deoxyribonucleic acid, the genetic code) analysis
A large section in most labs, and often the one that asks for a master's degree.
Toxicology
Drugs and alcohol in blood, tissue and breath. Heavy chemistry and constant casework.
Firearms and tool marks
Comparison work, long training, and the discipline most challenged in court.
Digital forensics
Phones and computers. A growing area of the lab.