Police found four syringes with an injectable form of cocaine in them and a small plastic bag with cocaine residue on it.

The police gave Mr. Dean a desk appearance ticket charging him with a misdemeanor, criminal possession of a controlled substance, which Ms. Markoe-Boyd said was cocaine residue.

A toxicologist, however, reported that while a minute trace of cocaine residue was found in her body, it was nowhere near what would be required to cause the "drug-crazed" aggression Taylor had described.

Once a person's hands come into direct contact with cocaine, Dr. Demirgian said, even the regimen of repeated scrubbing surgeons undergo before operating leaves a cocaine residue that persists for at least two days.

After Sherlyn was taken to the hospital, officers returned to the apartment that evening and found a blue strainer containing what appeared to be cocaine residue in a night table in the bedroom, according to court documents.

He said a box found in Mr. Hoffman's refrigerator contained 9.38 grams of marijuana, 0.31 grams of hashish, a cocaine residue and trace amounts of LSD and amphetamines.

Studio 54 was, in many minds, the first modern nightclub, with spiraling lights and stage machinery and a cocaine residue.

Nothing but a two-year-old DUI and a pop for cocaine residue a year before that.

The cause of death had not been determined yesterday, he said, but cocaine residue was found in Mr. Kelley's pocket at the hospital.

Prosecutors said Mr. Batista was charged with misdemeanor drug possession because the police found cocaine residue in the apartment.