Crutcher, hit in the chest, was pronounced dead soon after arriving at a nearby hospital.
Videos taken by a police helicopter included pilots telling each other that they believed the "black dude" in the scene was dangerous and "needed to be Tasered" for not following commands.
One of the pilots, according to local news reports, was Shelby's husband. But Shelby did not hear those remarks, police said.
Shelby has been charged with manslaughter. Her lawyer told NBC News last month that Crutcher had ignored her commands and appeared to be under the influence of drugs. Police said they found a vial of PCP in his car.
The toxicology report, released by the Oklahoma Chief Medical Examiner's Office Tuesday afternoon, indicates that PCP, known medically as Phencyclidine, was found in Crutcher's blood. Traces of a similar hallucinogenic drug, Tenocyclidine, were also found.
It is unclear how the toxicology results could impact the case against Shelby, who prosecutors said "reacted unreasonably" and became "emotionally involved to the point that she overreacted."
Jon Schuppe writes about crime, justice and related matters for NBC News.