Becoming a parent is a thrilling journey, but it often comes with questions and challenges, particularly around feeding your little one. Breastfeeding is highly recommended, not only for its health benefits but also for the special bond it creates. Storing and preparing breastmilk can seem daunting, but with the right guidelines, you can ensure your baby gets the best nutrition possible. This guide will walk you through important storage and preparation techniques to help you feel confident in your breastfeeding journey. Download our free guide for safely storing and preparing breastmilk or formula below. It adheres to the latest AHS (Alberta Health Services) policies and includes NICU considerations.
Understanding Breastmilk Storage Guidelines
Before we dive into storage specifics, it is important to know how long breastmilk remains safe and nutritious under different conditions. Freshly expressed breastmilk can be stored in three primary ways—at room temperature, in the refrigerator, and in the freezer. Each storage method has unique guidelines to preserve the milk’s quality and safety.
Room Temperature
At room temperature, breastmilk can safely be stored for up to 4 hours. Ideally, the room should be around 77°F (25°C) to maintain quality. For example, if you express milk before a short outing, you can safely leave it in your diaper bag for a few hours without worry.
As you store milk, take care to keep it away from heat sources or direct sunlight, which can diminish its nutritional value.
Refrigeration
Breastmilk can last for 3 to 4 days in the refrigerator when kept at a temperature between 32°F to 39°F (0°C to 4°C). For example, if you express milk on a Monday, ensure that you consume or use it by Thursday for safety.
To keep the milk fresh, store it at the back of the fridge where the temperature is more stable. Avoid placing milk in the door compartments, which are subject to temperature fluctuations.
Freezing
For longer storage, freezing is an excellent option. Breastmilk can remain in the freezer for about 6 months at its best quality, but it is safe for up to 12 months. When storing milk in the freezer, use airtight containers or special breastmilk storage bags.
A practical tip: always leave some extra space in the container because liquids expand when frozen. Imagine a breastmilk bag bursting during storage—it’s best to avoid that scenario!

Preparing and Thawing Breastmilk
Once your breastmilk is stored properly, you'll need to know how to prepare it for feeding. Proper thawing is crucial to maintain the milk’s quality.
Thawing Frozen Breastmilk
When it’s time to feed your baby, follow these strategies for thawing milk:
In the Refrigerator: Move the frozen breastmilk to your fridge overnight. This slow thawing method keeps the milk safe and preserves nutrients. Many parents find this method most convenient.
Warm Water Bath: If you need to thaw it more quickly, place the sealed bag or container in a bowl of warm water. Make sure it’s warm—not hot—to avoid potential nutrient loss.
IMPORTANT: Do not use a microwave. Microwaving can create hot spots that might burn your baby's mouth and destroy valuable nutrients.
Warming Breastmilk
If you like to serve warm milk, here are two options:
Use a bottle warmer specifically designed for breastmilk.
Continue using the warm water bath method to warm milk gently.
After warming, test the temperature by putting a few drops on your wrist. The milk should feel warm, not hot.
Breast Pumping Tips
For parents planning to pump, adopting effective strategies can simplify the process:
Choose the Right Pump: Invest in a reliable breast pump that fits your needs. Electric breast pumps are often more efficient, especially for regular use.
Establish a Routine: Pick a regular time to pump that syncs with your baby’s feeding schedule. This consistency can help maintain your milk supply. For instance, some parents find success pumping after morning feeds when milk supply tends to be higher.
Comfort Matters: Ensure the breast shield fits you well. A snug fit can enhance comfort and help extract more milk.
Best Practices for Safe Storage
To make sure your expressed breastmilk is stored safely and remains fresh, keep these best practices in mind:
Use Quality Storage Containers: Choose BPA-free plastic or glass containers made specifically for breastmilk storage. This ensures the milk remains uncontaminated.
Label Your Milk: Clearly put labels on containers with the date and time of expression. This method helps track freshness and promotes using older milk first, minimizing waste.
Avoid Mixing Milk: Limit combining milk from different pumping sessions unless they are cooled to the same temperature. This helps prevent bacterial growth.
Chart of Storage Guidelines
Use this chart as a quick reference for breastmilk storage guidelines.
Embracing Parenthood with Confidence
The journey of parenthood is indeed filled with joy and responsibility. Properly storing and preparing breastmilk is vital in ensuring your newborn receives high-quality nutrition. By understanding the storage guidelines and following proper thawing and warming methods, you’ll be well-equipped to provide safe and nourishing feedings.
Remember, mastering breastmilk storage and preparation may seem overwhelming at first, but every small step you take supports your baby’s health and development. Enjoy this wonderful adventure of parenthood with the peace of mind that you are giving your child the best start possible.

How to Store and Prepare Breastmilk: Free Download
Following these guidelines will set you up for success, allowing you to focus on the joys of nurturing and bonding with your baby.

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