This will depend upon the specific charges you are facing, but generally the rules for "prescription" (aka what is referred to as the "statute of limitations" in the rest of the United States) are as follow for noncapital offenses in Louisiana:
(1) Six years, for a felony necessarily punishable by imprisonment at hard labor.
(2) Four years, for a felony not necessarily punishable by imprisonment at hard labor.
(3) Two years, for a misdemeanor punishable by a fine, or imprisonment, or both.
(4) Six months, for a misdemeanor punishable only by a fine or forfeiture.
It is important to note that the statute does not run while the defendant is: avoiding detection, fleeing, outside the state, absent residence in state, or lacking mental capacity to stand trial.
If you are seeking legal representation in this matter in Louisiana, I invite you to contact my firm at 504-599-9997 for a free case evaluation to determine whether or not we serve your jurisdiction.