The award-winning "Parts Unknown" host was found hanging in his bathroom in a luxury hotel room in France on June 8.
While the toxicology report did show therapeutic traces of an unnamed, non-narcotic medication, the ruling remained that his cause of death was self-inflicted. Brash and opinionated, he had spoken openly about his use of drugs and addiction to heroin earlier in his life.
Christian de Rocquigny, the local French prosecutor in charge of the examination, revealed that Bourdain had no narcotics present in his system.
CNN confirmed the chef's death: 'It is with extraordinary sadness we can confirm the death of our friend and colleague, Anthony Bourdain. "I never was a person who needed a drink". He was 61 years old. "Maybe because my experiences were so very bad in the end, I've never been tempted to relapse", he wrote in his memoir, Kitchen Confidential.
Bourdain was cremated in France last week and his remains were then sent back to his younger brother, Christopher, in the United States.
The family plans to have a small memorial in the future, she said. Parts Unknown saw Bourdain focus on cuisines from around the world, and he visited places including Ethiopia, Jamaica, Tokyo and Rome for the CNN series.