Expert Recommendations for Safe Pumping, Storage, and Thawing of Breast Milk

Breastfeeding provides numerous benefits, including emotional connection, optimal nutrition, and immune system support for infants. However, for parents who need to pump and store breast milk, ensuring proper handling and safety is essential.

According to Dr. Patricia Campbell, a pediatrician and lactation consultant at Children's Hospital Los Angeles, many parents experience anxiety about the food safety of expressed breast milk. Fortunately, organizations like the Centers for Disease Control and Prevention (CDC) offer clear, practical guidelines to help parents manage breast milk safely.

Key tips for pumping and handling breast milk include:

• Always wash your hands thoroughly before pumping. If soap and water are unavailable, sanitize your hands with an alcohol-based hand sanitizer containing at least 60% alcohol.
• Use only clean, food-grade containers or specifically designed breast milk storage bags. Avoid reuse of single-use storage bags.
• Clearly label each container with the pumping date and the baby's name, especially when sending milk to daycare.
• Sanitize bottles and containers after each use.
• Keep fresh milk and frozen milk separate to prevent cross-contamination.
• Discard any leftover milk after feeding; do not reheat or reuse it.

Storage guidelines for breast milk are as follows:

• At room temperature (up to 77°F or 25°C): up to 4 hours
• In a cooler with ice packs: up to 24 hours
• In a refrigerator (40°F or 4°C): up to 48 hours
• In a home freezer (attached to a refrigerator): up to 3 months
• In a deep freezer (-4°F or -20°C): 6 to 12 months

Thawing breast milk safely:

• The best methods involve placing the frozen milk in the refrigerator overnight or gently swirling the container in warm water.
• Avoid using boiling water or microwaving, as high temperatures can damage nutrients and create hot spots that may scald the infant.

Once thawed, breast milk should be used within 24 hours and must not be refrozen. Proper handling and storage significantly help preserve the nutrients and safety of expressed breast milk.

For more detailed guidance, refer to the CDC’s recommendations on breast milk handling and storage. By following these practices, parents can ensure their baby’s milk remains safe and nutritious.

Source: https://medicalxpress.com/news/2025-08-experts-safely-breast.html