erwhiriwLindsay Lohan has confirmed on her Twitter page that she failed a court-ordered drug and alcohol test.

The star of Mean Girls said that if asked, she is ready to appear before the judge in her case and face the consequences for her actions.

In a series of messages posted late last night, Lilo said: “Regrettably, I did in fact fail my most recent drug test.”

She also said: “Substance abuse is a disease, which unfortunately doesn’t go away overnight. I am working hard to overcome it.”

Lindsay often posts updates with the account that is verified by Twitter as belonging to the actress.

The failed drug test was first reported by

The test result could mean a probation violation and more jail time for the 24-year-old actress. In July, Lindsay was sentenced to three months in jail followed by three months in rehab after violating probation stemming from a pair of drug and driving under the influence cases filed after two arrests in 2007.

She ended up serving two weeks in jail and another 23 days in an inpatient rehab treatment at the Ronald Reagan UCLA Medical Center.

At a hearing last month, the judge ordered the actress to attend psychotherapy, drug and alcohol counselling as well as random drug and alcohol testing several times a week. Compliance would allow her to return to unsupervised probation in November.