LOS ANGELES — Lindsay Lohan has confirmed on her Twitter page that she failed a court-ordered drug and alcohol screening, and she 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 Friday, the actress 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 over night.