There are no legal limits in regards to volume removed with or without fat transfer in California.There are safety guidelines put together by committees.These are suggested guidelines only.Most plastic surgeons follow the guidelines that no more than 5 L should be removed during any outpatient procedure.Removing more than 5000 mL should be done only with direct medical observation after the procedure.In my opinion using absolute numbers is not the best way of setting safety limits but rather the volume of fat removed should be based on multiple factors such as the size of the patient and overall health of the patient.This is where the expertise and extensive training of board-certified plastic surgeons comes into play.Understanding the physiology and healing process allows talent to doctors to keep procedure safe while still getting the The best possible results.For those to require more than 5 L of fat removed it maybe better to have the procedures done in multiple sessions.Best,Mats Hagstrom M.D.