How to heat breast milk that hasn't been put in the refrigerator when it's time to drink

Patient's question:

If there is something tomorrow at noon and if you express breast milk and do not put it in the refrigerator, how many hours can it be placed; How to warm it up when drinking; Previous treatment and effectiveness: If there is something tomorrow at noon and if you express breast milk and do not put it in the refrigerator, how many hours can it be placed; How to warm it up when drinking

Doctor's answer:

You can express breast milk and store it in the refrigerator, where it can last for 24 hours. Advice: When you're ready to feed, you need to warm it up. The best way is to place it in hot water to warm it. If you're short on time, you can also use a microwave or other methods, but you must control the temperature carefully. Colostrum can be stored at room temperature between 27-32 degrees Celsius for 12 hours, mature breast milk can be stored at 15 degrees Celsius for 24 hours, at 19-22 degrees Celsius for 10 hours, and at 25 degrees Celsius for 6 hours. In a refrigerator's cold storage compartment at 0-4 degrees Celsius, it can be stored for up to 8 days. When feeding the baby, warm it to 40 degrees Celsius.