B.J. Raji works out during the 2009 NFL Scouting Combine. (Michael Conroy / Associated Press)

Boston College DT B.J. Raji, projected to be a top-15 pick in many mock drafts, says he has been assured that he didn’t fail a drug test at the NFL Scouting Combine, he told the Santa Rosa Press Democrat.

It was reported by two Internet Web sites last week that Raji had tested positive at the combine. His agents have since released a statement saying the “reports are untrue.”

Raji, who visited the 49ers on Tuesday, responded to the controversy by talking to The Press Democrat:

“The biggest thing is trying to figure out how this started,” Raji said. “I couldn’t understand how this rumor became such a big splash in the media when there was no evidence — there was no substance to believe it. The last couple days, I was just trying to figure out: Who? What? Basically, why?”

“Now, I’m happy the truth is out. Obviously, it’s not going to be as big of a splash as the negative part. But as long as the coaches and the decision-makers know what is true, then I don’t need to be concerned with everybody else.”

The Press-Democrat reported that Raji is visiting the 49ers, who own the No. 10 overall draft pick, on Tuesday after visits to the Detroit Lions (No. 1, No. 20), Tampa Bay Buccaneers (No. 19) and Denver Broncos (No. 12). Raji also will meet with the New York Jets (No. 17) and Cleveland Browns (No. 5).