Musk posted results from a June 11 lab test conducted by Fastest Labs of South Austin, Texas, showing negative results for amphetamines, ecstasy, cocaine, ketamine, cannabinoids, and fentanyl.
The New York Times report alleged Musk's drug use was "chronic" and caused bladder issues, with sources claiming he kept narcotics in a daily medication pill box.
Musk previously admitted to using prescription ketamine for mental health issues but denied current use, accusing the newspaper of "lying."