A hospital grade pump would also be indicated for a mother who has a low milk supply and is not seeing an increase in production from using a commercial grade pump. (thebreastfeedingcenterofchicago.com)
Plus, how can you tell if you really do have a low milk supply? (pregnancymagazine.com)
So the first thing is to determine whether or not you truly have low milk supply. (justbreastfeeding.com)