Fat Harvesting: How Much Will Survive and How Much Should I Overfill by?

In the process of fat harvesting, how much of the fat will survive? How much of an overfill is a safe guess? Overfilling area by 50%? 

Doctor Answers 6


A lot of fat survival depends on the technique that is used, the size of the fat grafts and the injection technique. Experience and meticulous technique counts

New York Plastic Surgeon
4.9 out of 5 stars 14 reviews

How much Fat Survives?

Excellent question, there is great debate currently about methods of harvesting, methods of injecting and how much survives , I will tell you go to an experienced surgeon who has performed these procedures, expect a 20-40% loss depending on the type of procedure and technique used, good luck.

Jonathan Weiler, MD
Baton Rouge Plastic Surgeon
4.9 out of 5 stars 85 reviews

Fat injection

Dear Littlebitts91,

  That is a critical question. You can see from the previous answers  that  the numbers are different from doctor to doctor. In my own experience, in the last year , 9 patients who had fat injection to the butt by other plastic surgeons, lost fat completely or almost completely after 1 year. Butt implants are soft, feel and look natural. Most importantly, they do not disappear.  Consult with  board certified plastic surgeons who have experience in butt implants surgery. Check their before and after pictures and make sure that you like the results.

                   Best of luck,

                                          Dr Widder

Shlomo Widder, MD
McLean Plastic Surgeon
4.8 out of 5 stars 124 reviews

Fat Survival Depends on Harvesting & Injection Technique

The amount of harvested and injected fat that survives is an area on ongoing research and conjecture at this point. Most experienced fat transfer surgeons report an estimated survival from 50-80%.  We know that harvesting and injection techniques, location and treatment modalities have some impact, but the exact parameters are not yet know.  What is known is that the procedure is highly effective clinically and safe.  A physical exam is necessary to estimate how much is needed and how much will need to be suctioned, processed and injected. A more specific answer would be pure speculation.  All the best.

George Bitar, MD
Fairfax Plastic Surgeon
4.6 out of 5 stars 54 reviews

Fat Injection Overfill Varies By Where It Is Injected

No one can predict with any accuracy as to how much fat will survive in any one patient. There are great variabilities in how fat survives based on where it is harvested from, how it is prepared, the technique of injection and where it is injected into. Most surgeons do some degree of overfill but there are big differences in how much overfill is done for a specific area. This is seen in the approach used, for example, in the buttocks I(as much as you can) vs the cheeks. (slight overfill) 

Barry L. Eppley, MD, DMD
Indianapolis Plastic Surgeon
4.7 out of 5 stars 72 reviews

Fat Grafting Volumes in Brazilian Buttlift

  I typically see at least 70% survival.  I also transfer about 1200 cc to 1500 cc to each buttock. 

Kenneth B. Hughes, MD
Los Angeles Plastic Surgeon
4.9 out of 5 stars 492 reviews

These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.