The Cook County medical examiner's office said the additional tests will include a toxicology analysis, and the results could take six and eight weeks.
The family told police that Trotter, 54, was taking medication for seizures, high blood pressure and high cholesterol. He had flown to Jackson Hole, Wyo. against doctors' orders to address a culinary conference Sunday night, according to the police reports.
"He got on a plane this weekend and his son found him unresponsive this morning," they stated.
The son told police Trotter was on the couch, watching television, when he got home shortly before midnight Monday, according to the police report. The son said he woke the next day and saw his father still on the couch, unresponsive, the report said.
A memorial service for Charlie Trotter has been scheduled for 10 a.m. Monday at Fourth Presbyterian Church, according to his mother, Dona-Lee Trotter. The service will be open to the public, and chefs and other friends from Chicago and around the country are expected to attend.
Dona-Lee Trotter said her son will be cremated, with no separate funeral.
The self-taught chef opened Charlie Trotter’s restaurant on Armitage Avenue in 1987, and it quickly became the most talked-about restaurant in Chicago. He was named the country’s Outstanding Chef by the James Beard Foundation in 1999. In 2000, Wine Spectator magazine called Trotter’s the best restaurant in the nation.