After a baby has started to drink a bottle of breastmilk (that was previously frozen) how long is it allowed to stay out 1)at room temperature and 2)in the fridge? Also, do you know how long a bottle of breastmilk can stay in a diaper bag in an area made for bottles (the type of area that looks like it is lined with aluminum foil)?
The La Leche Legue clearly states on their breast milk storage page that it is not known whether or not thawed milk that is left over from a feeding can be kept refridgerated until the next feeding. Do so, I imagine, would be at your own risk (I do it, but I make sure it's in the fridge).
Room temperature fresh milk can keep for 10 hours (not left over after a feeding), in the fridge for 8 days, in a freezer 3 months, and in a deep freeze for 6 months.
As for keeping it in a diaper bag - invest in some small ice packs. I keep two in freezer, and these, in my insulated diaper bag bottle compartment, are enough to keep BM cold (as if it were in the fridge) for several hours in warm Florida weather.
Once they start drinking from a bottle of breastmilk or formula, you should not save it you should be throwing it out, because of bacteria growth. Least this is what 3 out of 4 of the docs in our office told us. hope this helps
Another idea could be to offer small ounces at a time...that way you aren't wasting your precious pumping that you did earlier!
I've heard also not to keep the bottle after your baby has started to drink b/c of bacteria growth.
IUI's-4 to conceive Troy July 25/05
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Like the last 2 posters said, I have also heard that you should not re-use it because bacteria from the babies mouth gets in it and multiplies, and could make baby sick. I have always heard it should be used within an hour, and then whatever is left tossed, and the bottle washed.