Aug 09, 2009 10:53 AM EST

A former BALCO chemist says that its possible that David Ortiz's inclusion on the list of 104 failed drug tests may have been caused by a supplement that was legal in 2003.

Patrick Arnold did prison time for his role in the BALCO scandal and created "the clear."

"Yes, people back then did test positive because of supplements, and occasionally it was for nandrolone, which I think (Ortiz) is alluding to, but not verbatim," Arnold told the New York Daily News on Saturday. "If he could say it was nandrolone, I'd say, 'OK, you may have a case.' In lieu of the fact there are no exact details (about what Ortiz took), the possibility of having a false positive from supplement use in 2003 is definitely plausible. We'll never learn if this is an excuse (for players) or a legitimate defense until we know more details about the substances in question."

Via New York Daily News