Data came from Arizona, Connecticut, District of Columbia, Indiana, Michigan, Montana, New Jersey, Pennsylvania, Ohio, South Dakota, Texas, Utah, Virginia, and Washington. Many of the states received formula grant funds from the Bureau of Justice Assistance for drug enforcement programs under the Anti-Drug Abuse Acts of 1986 and 1988. Findings showed that the laboratories analyzed 343,798 suspected control substances in 1988. Forty percent of the substances identified were marijuana, and 33 percent were cocaine. The average time for completion of analysis ranged from 1 to 99.9 days, with more than half of the laboratories averaging 2 weeks or less. The laboratories spend $17.1 million in 1988, including $2.5 million for equipment. Fifty-four percent of the requests for analyses of suspected controlled substances came from municipal law enforcement agencies; 21 percent came from State agencies. Figures, tables, footnotes, and appended background information, additional tables, and 6 references.