Singer-actress Mel B agreed to submit to random drug testing to prove she is a fit parent, and she has come back clean.

Mel B was tested for drugs and alcohol three times on September 6, 7 and 10. The results were negative for all of them, according to new legal documents obtained by tmz.com.

The results show she tested negative for everything -- alcohol, marijuana, cocaine and addictive painkillers.

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The Spice Girl member agreed to submit to the testing for a limited time as part of her ongoing custody battle with Stephen Belafonte. This came after a member of their household staff accused her of being an alcoholic and a sex addict who is unfit to retain custody of their children.

Mel B strongly denied the accusations, and now has test results to back her up.

As part of their last settlement, Mel B also agreed to submit to a child custody evaluation with psychological testing.