Breastmilk storage

Breastmilk storage

Storing expressed breastmilk

● Store expressed breast milk in plastic or glass containers with airtight,
sealed lids. Use BPA‐free plastic wherever possible. Label each bottle or container with the date and time.

● You can also use expressing bags. These come in one time use or reusable
options. This is becoming increasingly popular.

● In the early days freezing your milk in ice cube trays and then popping them
out as ice cubes and storing them in a snap lock bag works well. Especially
as you will only need small amounts. This prevents wastage.

● Once breastfeeding is established, store milk in amounts from around 60 ml
to 200 ml, making sure there's some empty space at the top of the bottle or
bag. Milk expands when freezing, and if the bottle/bag is full it will spill over
the top.

● Store expressed breast milk at the back of the fridge. Fridge doors tend to
get opened a lot and the back of the fridge is cooler.
● If you can't store expressed milk in the fridge or freezer straight away, put it
in a chilly bin with ice packs in contact with the bottles, for no longer than 24
hours.

The American Academy of Pediatrics has recently updated their
recommendation on adding freshly expressed milk to previously chilled milk. Their statements now reflects what many other researchers have found, which is that combining warm milk with cold milk does not pose a risk to your baby.

“Mothers can mix warm milk and cold, or even consider pooling milk from 24 hrs
together, which may help even out variability due to pumping time or breast
emptying (which influences fat content)”.

Storage guidelines



These guidelines are for milk expressed for a full-term healthy baby. If baby is seriously ill and/or hospitalized, discuss storage guidelines with your LMC/GP/LC.

Using stored breast milk

● Thaw frozen breast milk slowly in the fridge. If you need to thaw it quickly, put the bottle of milk in warm water.

● Never use a microwave to thaw or heat breast milk. This can cause uneven
heating, which can scald a baby's mouth. It also damages some of proteins that
pass immunity to your baby.

● Warm the expressed breast milk in a jug of hot water. Test the temperature of the milk by shaking a few drops on to the inside of a wrist.

● Do not re-warm breast milk that has been defrosted and previously heated.
● Breast milk can vary in colour and does not look like cow's milk or formula milk. It can be yellowish, bluish, or quite pale and watery looking. All these colours are normal. Sometimes the fat separates during storage and goes to the top of the milk. If this happens, shake the bottle gently before using the milk to mix the fat back in again.

Julia Daly
IBCLC
www.morethanmilk.co.nz

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