How is Body Fat Accurately / Concretely Measured Before Suctioning It out Through Liposuction?

The determination of how much body fat there is, as opposed to muscle and skin, is made on physical exam. Liposuction is not about a "concrete measurement" or number. It is a technique used to contour the body and remove focal unwanted fat deposits. The amount of fat that can be removed safely is not always the amount you want to remove. What you leave behind in liposuction is more important than what you take out. You want your plastic surgeon to take the right amount of fat from the right locations, leaving a nice contour. Taking as much as possible does not equal the best result. The amount and quality of the skin in those areas is important too, since once the volume is removed, you are relying on the skin to shrink down around the smaller volume. If you have excess skin, or poor quality skin, you may need excision of the skin for the best result.

The determination is made by physical examination and experience. Fat can be felt throught the skin. Certain areas do not normally store extra fat, and can be used as a benchmark for skin thinkness. Other areas, that tend to store fat disporportionately, can be compared to the "normal" skin thickness with a pinch test. Experience allows me to make an educated guess about how much "extra" fat there is, and how much can be removed. With liposuction, proportions are more important than absolute volume.  Liposuction is not a weight loss tool, but a way to sculpt the body by removing localized, disproportionate accumulations of fat.