We knew that Lindsay Lohan would be undergoing court-mandated drug tests and since her release from jail, she can not fail any of them. But TMZ.com is reporting and confirming that Lindsay Lohan has failed a recent drug test and under the conditions of her probation, Lindsay will serve 30 days in jail if there was a positive shown during a drug test. Yikes!
UPDATE: TMZ.com is reporting that Lindsay Lohan failed multiple drug tests and one tested positive for cocaine and the other tested positive for another unknown substance.