During a standard liposuction case, your tissue is infiltrated with fluid to help with anesthesia and hemostasis (blood loss). After allowing it to permeate thru the tissues, it is then sucked out with the fatty tissue that surrounds it. The aspirate is, therefore, mainly fat, with some of that fluid and a small amount of blood. Best.
Liposuction removes fat as well as the fluid that is injected prior to your procedure, some fluid from your tissues and a bit of blood. However, it is mostly fat. Thus the reason that it is such an effective procedure for body contouring....