By Breia Brissey
September 20, 2010 at 08:58 PM EDT

Lindsay Lohan, who recently admitted to failing one drug test, must now appear in court on Friday for a judge to determine whether or not she’ll go back to jail. Beverly Hills Superior Court Judge Elden Fox issued a bench warrant, the fourth in the DUI probation case, for Lohan Monday, requiring she show in person for the court hearing or face arrest. Lohan’s failed court-ordered drug test could result in a 30-day jail sentence for the actress. Lohan, 24, who previously served 13 days in jail, has admitted to failing one test, and reportedly failed at least two — one for cocaine, and the other for amphetamines.

Also Monday, Lohan settled her $100 million lawsuit with E*Trade Financial Corp, who she claimed modeled a “milkaholic” baby after her for a commercial. Though terms of the settlement are not available, court records show the actress yanked the suit.

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