of lindsay lohan fails drug tests

Lindsay Lohan -- Failed Drug Tests Could Ruin Career: TMZ reports that Lindsay failed two drug tests, one for cocaine last week.

Lindsay is now relying on Judge Elden Fox to allow her to leave California to shoot "Inferno" in Louisiana and possibly fly to New York City for "Saturday Night Live."

Here's the problem. Sources connected with the case have been telling TMZ ... if Lindsay were to fail a drug test the judge would probably pull the plug on out-of-state-travel -- a privilege for Lindsay, not a right.

TMZ broke the story that Lindsay failed two tests ... one for cocaine last week.

The judge has been pretty gracious, allowing Lindsay to visit NYC to see her family last weekend. But all bets are off now that Lindsay has flunked two tests.

And sources close to Lindsay somehow already know the big wigs on "Inferno" are pissed that she may have screwed up again, so flying to Louisiana may be a moot question.