Minimum safe levels would be hematocrit of 12 and a hemoglobin of 36. Board-certified plastic surgeons are trained that a minimum of 10 and 30 are required for reconstruction procedures on severely ill and debilitated patients, however liposuction with a BBL is elective, and as such the patient should be in very good health, and not have to require a “cell saver”, or a blood transfusion after undergoing an elective cosmetic surgery. These recommendations are not “my opinion”, but basic good, sound medicine. Patients can’t easily increase their hemoglobin and hematocrit to safe levels preoperatively utilizing iron sulfate supplements, vitamin C , Vit B 6&12, and multivitamin supplementation preoperatively, and adhering to a very strict healthy diet. Good luck & best wishes.