The troubled actress wore dark sunglasses, a blue blouse and black trousers, as she arrived at the Airport Courthouse in Los Angeles.
Lohan is just days away from the end of her house arrest sentence stemming from a probation violation.
But the LA County Probation Department reportedly wants her sentenced to jail for allegedly testing positive for alcohol earlier this month.
The 24-year-old former Mean Girls star left her Venice Beach home in an SUV with blacked-out windows.
Several bottles of water and sports drink Muscle Milk could be seen inside her garage, but there was no alcohol in sight.