Many insulin patients need to use insulin for treatment, and they are also used to keep insulin in their own refrigerator for backup. Therefore, how to properly preserve insulin is also a matter of great concern. The following is the correct way to preserve insulin in 3 cases: 1. Unopened insulin Unopened insulin should be kept in an environment of 2 to 8℃ for a long time. Generally speaking, insulin is not taken from the refrigerator now, but needs to be injected at room temperature. Therefore, insulin taken from the refrigerator should be placed at room temperature for about 60 minutes and injected again when it returns to room temperature. In other words, in summer, the insulin pen with refill can be placed in a cool location in the house. 2.How to store opened insulin The opened insulin injection can be stored at room temperature, and the storage period is 28 days (about 4 weeks) if the temperature does not exceed 30℃. Because insulin injection repeatedly placed in hot and cold environment will easily cause insulin failure, therefore, it is not necessary to put it into the refrigerator for freezing. 3. Preservation of insulin under special circumstances Long-distance travel, such as travel by air, it should be noted that the temperature of the luggage compartment of the airplane is often below the freezing point, which may cause insulin to freeze and lose its efficacy, so when you go out by air, you cannot check your insulin in, but carry it with you. In case of sudden power failure, insulin can be placed in a dark, cool and light-proof place, such as in a thermos, well or water tank. Doctor’s tip: Insulin should be kept away from light, even in winter, insulin should not be exposed to direct sunlight to avoid failure.