The storage requirements for insulin depend on the type of insulin you are using. There are different types of insulin, including rapid-acting, short-acting, intermediate-acting, and long-acting insulin. Each type has specific recommendations for storage once it has been opened and is in use.
Rapid-Acting and Short-Acting Insulin: Insulin lispro, insulin aspart, and insulin glulisine are examples of rapid-acting insulin, while regular insulin is a short-acting insulin. Once these insulins are opened and in use, they can be kept at room temperature (between 59°F and 86°F or 15°C and 30°C) for up to 28 days. Keeping them at room temperature can make injections more comfortable because cold insulin can cause discomfort.
Intermediate-Acting and Long-Acting Insulin: Insulin isophane (NPH) is an example of an intermediate-acting insulin, and insulin glargine and insulin detemir are long-acting insulins. These types of insulin should be stored in the refrigerator between 36°F and 46°F or 2°C and 8°C until they are opened. However, once opened and in use, they can also be kept at room temperature (between 59°F and 86°F or 15°C and 30°C) for up to 28 days.
It's essential to check the specific storage instructions provided by the manufacturer for the insulin you are using, as different brands and formulations may have slight variations in their storage recommendations.
Always avoid exposing insulin to extreme temperatures (e.g., freezing or direct sunlight) and store it away from heat sources or hot environments, as it can affect its effectiveness. Additionally, never use insulin that has changed color, formed crystals, or looks different from when it was first opened.
If you have any doubts or questions about insulin storage, it's best to consult with your healthcare provider or pharmacist for personalized advice based on your specific insulin regimen and needs.