Juvenile Preventive Detention Standards Act of 1984

Juvenile Prevention Detention Standards Act of 1984 - Amends the Juvenile Justice and Delinquency Prevention Act of 1974 to require the Attorney General to withhold Federal financial assistance from any State or local government law enforcement program that detains a juvenile who has not been found guilty of a criminal non-status offense unless certain procedural requirements have been met.

Prohibits the detention of juveniles for the following purposes: (1) punishing, treating or rehabilitating the juvenile; (2) allowing parents to avoid their legal responsibilities; (3) satisfying demands by a victim, the police or the community; (4) permitting more convenient access to the juvenile; and (5) facilitating further interrogation or investigation.