Final answer:
The oldest forensic laboratory in the United States is that of the FBI.
Step-by-step explanation:
The oldest forensic laboratory in the United States is that of the FBI. The FBI Laboratory, located in Quantico, Virginia, was established in 1932 and is one of the world's premier crime labs. It provides forensic services such as DNA analysis, firearms examination, and trace evidence analysis to support investigations conducted by the FBI and other law enforcement agencies.