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Breast Milk Storage Guidelines
How to Fit Your Flange
Check breast flange fit, if pumping causes discomfort a larger or smaller breast
flange size may be needed.
NOTE:
When thawing frozen milk, label as thawed when completely thawed (i.e. no ice crystals present). Use the
time when completely thawed to base acceptable time limits for use rather than when it is taken from the freezer.
hese guidelines for storage and thawing of breast milk are a recommendation. Contact your lactation consultant or
breastfeeding specialist for further information.
Source: Jones, F. Best Practice for Expressing, Storing and Handling Human Milk in Hospitals, Homes and Child Care
Settings. Forth Worth, TX: Human Milk Banking Association of North America, 2019
GOOD FIT
During pumping, your nipple
moves freely in the breast
flange tunnel. You see space
around the nipple. Not much
areola is drawn into the tunnel
with the nipple.
FLANGE TOO SMALL
During pumping, some or all
of your nipple rubs against
the sides of the breast flange
tunnel.
FLANGE TOO LARGE
During pumping, more areola
is drawn into the breast flange
with your nipple. Your areola
may rub against the side of the
breast flange tunnel.
Room Temperature
77ºF (25ºC)
Refrigerator
39ºF (4ºC)
Freezer
0ºF (-18ºC)
Fresh Expressed or
Pumped
Up to 4 hours
Up to 4 days
6 Months - Best
12 Months - Acceptable
Thawed,
Previously Frozen
1-2 Hours
Up to 1 day
(24 hours)
Do Not Refreeze
Leftover from
Feeding
(baby did not finish
bottle)
Use within 2 hours after the baby is finished feeding
