09/17/2010 06:15 pm ET | Updated May 25, 2011

Lindsay Lohan FAILS Drug Test?

UPDATE: After initially denying it, Lohan has confirmed she failed.

PREVIOUSLY: TMZ and People are reporting that Lindsay Lohan failed a court-mandated drug test last week, and perhaps more than one, for cocaine and another unnamed substance.

If true, she could face 30 days in jail, according to the terms of her probation. Lindsay was released from jail last month after serving only 14 days of a 90-day sentence for violating probation for her 2007 drug case.

A D.A. spokesperson told TMZ that her office has not been "officially notified" of the test results.

For what it's worth, Lindsay tells Us Weekly that the drug test report is untrue.

"I'm fine," she said. "They're all nuts."