Conversation so far:
What year was the BALCO scandal for Jason Giambi?
Late in 2003, Jason Giambi was named by FBI investigators as being one of the baseball players believed to have received anabolic steroids from Bay Area Laboratory Co-operative (BALCO).
What was the BALCO scandal with Jason Giambi about?
The BALCO scandal was a scandal involving the use of banned, performance-enhancing substances by professional athletes supplied by the Bay Area Laboratory Co-operative (BALCO).
Did anybody report on the BALCO scandal with Jason Giambi?
In December 2004, the San Francisco Chronicle reported it had seen Jason Giambi's 2003 grand jury testimony in the BALCO investigation.

Question: Did he use steroids?
Self-contained rewrite: Did Jason Giambi use steroids?