Re: excessive lipase
taste it. if it tastes soapy or vomity, that's lipase. it's not bad to feed, it just tastes gross and most (not all) babies will refuse it. to test, put a bottle in the fridge and taste every couple of hours until the max time you'd keep it (5 days or whatever), or it starts to taste bad. not everyone has this, and if you do, you just use milk wihtin the time frame, or scald before freezing, to take care of the problem.
i've also just learned it can come and go over a nursing career, so watch for that as well.
Nursing, pumping, cloth-diapering, babywearing, working professor mama with the awesomest SAHD ever.