How is the fat is prepped for a BBL?

   I use gravity sedimentation to separate the fat as it causes minimal disruption of fat cells.Kenneth Hughes, MD

Fat processing is critical for good take of the fat.  A closed system where fat is collected, purified, and then reinjected expedictiously without contact with the outside environment is optimal.

Fat processing will vary from one surgeon to another. The ultimate goal is to obtain as pure and consistent a sample as possible in order to optimize graft take. The harvest is typically washed and filtered in order to remove blood and other non-viable tissue and fat prior to transfer. Some surgeons will spin/centrifuge the fat in order to remove the oil layer, while others will use gravity.With regards to your specific question, the devices used for processing fat are, in a technical sense, not very different from a cell saver. They are an intermediary between the patient and the liposuction disposal canister saving the viable fat for transfer. However, they are likely significant differences over and beyond the more obvious similarities (filter/mesh size etc).As always, discuss your concerns with a board certified plastic surgeon (ABPS).

The cell saver is not a standard way to prepare fat for large volume fat transfer. There are actual systems designed for this type of procedure that involves a closed system and gravity separation. Some PS use centrifuge or straining. 

There are many ways to treat the fat before injecting.  I do not think any one way is that much better.  Focus on doctors that good results. Good luck.