Neither drugs nor alcohol contributed to the death of Brandon Huang, the Cal Poly student who died in February after passing out outside his dorm, according to a toxicology report.
The investigation into the cause of his death remains open and active, according to San Luis Obispo County Sheriffs Office spokesman Tony Cipolla.
The only substance found in the toxicology screen was alcohol. Huangs blood-alcohol content was 0.03 percent and was not a factor in his death, according to the Sheriffs Office.
On Feb. 10, Huang, 20, died after passing out just outside the Poly Canyon Village residences. Huang, from Orinda, was a sophomore majoring in biology.
Huang had attended a large house party in San Luis Obispo the evening of his death, and he was driven back to Poly Canyon Village by a close friend who was acting as designated driver that night, according to a friend who last saw Huang at the party.
At 11:56 p.m. Saturday, Cal Poly police were dispatched to a location just outside his residence hall, where a caller had reported a male having trouble breathing. Police were unable to resuscitate Huang.