Laurent Rebours / AP

Lance Armstrong won his sixth straight Tour de France last year.

In an interview, Anderson said, “I had a job to do, that’s why I kept my mouth shut. I tried for a very long time to give him the benefit of the doubt. I waited for months to even tell my wife.”

Anderson said it was the only time he found the alleged substance and that he never saw Armstrong take any steroids or other banned substances.

Anderson also said he and Armstrong had a discussion in 2004 about cyclists who dope and claimed Armstrong told him, “Everyone does it.”

Armstrong’s attorney, Hal Gillespie, said that conversation took place before Anderson allegedly found the steroid. The lawyer also said he plans to depose Armstrong.

Anderson said he believes Armstrong knew about the alleged discovery because their relationship began to deteriorate almost immediately.

“We were friends, and then overnight, we were treated as very, very low class servants,” Anderson said, although he continued to work for him until November.

Herman countered that the two maintained a good relationship for several more months.

Anderson said he was working as a mechanic at a local bike store when he met Armstrong more than four years ago. They became friends, often riding together, and Anderson regularly worked on Armstrong’s bikes before becoming his personal assistant in November 2002.

Anderson said he was paid about $3,000 a month for duties that ranged from building bike trails on Armstrong’s Hill Country property to doing his grocery shopping in Spain.

Anderson said he was fired in November 2004 after asking for, and getting, a $500-a-month raise. He said Armstrong’s representatives offered him a severance package totaling $7,000.

Armstrong and his personal service company, Luke David LLC, sued Anderson about a month later, claiming Anderson demanded Armstrong pay him $500,000, give him a signed Tour de France jersey and future endorsements to help him set up his own bike shop.

Anderson countersued, accusing the cyclist of fraud, breach of contract and causing him severe emotional distress. Anderson says an e-mail Armstrong sent to offer him the job promised the help and should be considered a binding contract.

Anderson said Armstrong also demanded he sign a confidentiality agreement that would have held him liable for up to $1 million in damages.

Thursday’s filing came because the court wanted more details in support of Anderson’s claim.

Anderson said he reported the steroid claim to bolster his case that he was mistreated by Armstrong.

“I had no desire whatsoever to come out with this stuff,” Anderson said. “I sought a settlement and then they sued me. If somebody wants to say I want to get money out of it, they’re insulting my intelligence.”