Re: How to be sure it's high lipase
I hate to say that some bags are just not good because some people might have had luck with them -- but the Medela and Ameda bags warn you against getting milk in the zipper because it won't freeze properly. I don't know how anyone can not get milk in the zipper, either pouring or pumping directly into them! That's almost impossible. I thought it was fishy that the few milks my sitter said smelled bad (so grateful she caught it) were the Medela but the Lansinoh were totally fine. Double-zipper bags seem to be the way to go. Some other moms on here have recommended the Honeywell bags, also.
Mom to my sweet little "Pooper," born 10/12/11, and "Baby Brother," born 6/23/2014, and married to heavy metal husband. Working more than full-time, making healthy vegetarian meals for family, and trying to keep up with exercise routine.