How long should a seroma take to heal?

There is variation in how long seromas take to resolve, but with 150 cc's yours will probably take longer than most. It may be worth putting a drain back in if the amount doesn't drop off soon. How long was your drain in after the tummy tuck?

Seromas, like yours that are decreasing in volume typically will heal in the next 2 - 4 weeks. You should not worry and continue doing what you are doing. Its a tough question because occasionally large seromas can become chronic and then they will not resolve without surgical removal. There is nothing to suggest that this is happening to you so dont worry. Hope that helpsAdam Goodwin