app: “sienna” lang: “en” category: “breastfeeding” title: “Breast Milk Storage: Safety Rules You Need to Know” description: “How long can breast milk sit out? Fridge vs. freezer storage times — everything you need to know to keep your milk safe.” rtl: false doi: ~ evidence_level: “high” published_at: “2026-04-18” updated_at: “2026-04-18” validator_score: 82 keywords: [“breast milk storage”, “breast milk safety rules”, “how long is breast milk good for”, “breast milk refrigerator”, “breast milk freezer storage time”, “pumping and storing breast milk”, “breastfeeding best practices”, “thawing breast milk”] reading_time_min: 5