"During the test Lindsay screamed and cursed at the medical director before storming out of the room," the Sun quoted a source, as saying.
The troubled starlet is already facing a day in prison for DUI.
Recently, it was reported that Lohan had sex with a fellow inmate at the centre's loo.
The most recent bust will have as serious consequence on her lenient sentence, which is dependent on a successful spell at the rehab. (ANI)