London: Hollywood actress Lindsay Lohan has successfully passed two drug tests and is trying her best to stay clean.
The `Mean Girls` actress was ordered by a court for random screening as part of the conditions of her recent probation hearing for driving under the influence of alcohol, reports a news website.
"She (Lohan) is clear of illegal substances. She has already taken two tests and passed both," a source said.
The 23-year-old was also ordered by the court to wear a SCRAM (Secure Continuous Remote Alcohol Monitor) bracelet on her ankle to monitor her body`s alcohol levels every 30 minutes.