Quick Answer: Store unopened Fiasp insulin in the refrigerator (36°F-46°F / 2°C-8°C) until use. Once opened, Fiasp vials and pens can be kept at room temperature (below 86°F / 30°C) for up to 28 days, while PumpCart® has a shorter in-use period of 18 days. Always avoid freezing or excessive heat.
Proper storage of Fiasp insulin is essential to maintaining its effectiveness and ensuring safe use. Whether you're storing it at home or carrying it while traveling, following the right temperature guidelines can help ensure your insulin stays safe and effective for optimal diabetes management.
Related article: Insulin Storage: 10 Common Mistakes to Avoid When Storing Your Insulin Pens and Vials!
What Is Fiasp?
Fiasp is a rapid-acting insulin analog that helps manage blood sugar levels in people with diabetes. It is designed to work quickly after injection, making it ideal for use at mealtimes or when rapid glucose control is needed.
Fiasp contains insulin aspart, a modified form of human insulin, along with additional excipients that help it act faster than traditional insulin formulations.
Available in multiple formats, including FlexTouch® Injector Pens, vials, PenFill® cartridges, and PumpCart®, Fiasp provides flexibility for different insulin delivery methods and lifestyle needs.
Related article: A Beginners Guide to Basal and Bolus Insulin.
Should Fiasp Be Refrigerated?
Yes, like all insulin types and brands, Fiasp needs to be refrigerated. Before opening, Fiasp should be stored in the refrigerator at 36°F to 46°F (2°C to 8°C). This helps preserve its chemical stability and prevents the insulin from breaking down before use.
However, do not freeze Fiasp. If the insulin becomes frozen, it should be discarded immediately, as freezing can permanently alter its effectiveness.
Storing Fiasp: Specific Guidelines for Each Format
Fiasp comes in multiple formats to suit different needs, including FlexTouch® Prefilled Injector Pens, vials, PenFill® cartridges, and PumpCart®. Each format has its own specific storage requirements to ensure its effectiveness and stability. Understanding these differences will help you store and use your insulin safely. Below, we break down the proper storage conditions for each format.
Fiasp® FlexTouch® Injection Pens
❄️ Unopened: If unopened, store in a refrigerator (36°F to 46°F [2°C to 8°C]) until expiration. If stored outside refrigeration up to 86°F (30°C), use within 4 weeks, even if unopened.
🌡️ Opened: After first use, store at room temperature (below 86°F [30°C]) or in the refrigerator (36°F to 46°F [2°C to 8°C]) without the needle attached for a maximum of 4 weeks (28 days).
Fiasp® Vial
❄️ Unopened: Store in a refrigerator (36°F to 46°F [2°C to 8°C]) until expiration. If stored outside refrigeration up to 86°F (30°C), begin in-use storage for a maximum of 4 weeks.
🌡️ Opened: After first use, store at room temperature (below 86°F [30°C]) or in the refrigerator (36°F to 46°F [2°C to 8°C]) for a maximum of 4 weeks (28 days).
Fiasp® PenFill®
❄️ Unopened: Store in a refrigerator (36°F to 46°F [2°C to 8°C]) until expiration. If stored outside refrigeration up to 86°F (30°C), begin in-use storage for a maximum of 4 weeks.
🌡️ Opened: Store at room temperature (below 86°F [30°C]) for a maximum of 4 weeks (28 days). Do not refrigerate after first use.
Fiasp® PumpCart®
❄️ Unopened: Store in a refrigerator (36°F to 46°F [2°C to 8°C]) until expiration. If stored outside refrigeration up to 86°F (30°C), begin in-use storage for a maximum of 18 days.
🌡️ Opened: After first use, keep below 98.6°F (37°C) for up to 4 days. The maximum time at room temperature is 18 days, including 4 days in the pump. Do not refrigerate after first use.
How Long Can Fiasp Stay Out of the Fridge?
The time Fiasp can safely remain out of the fridge depends on its format:
✅ Fiasp® FlexTouch® and Vials: If unopened and stored outside refrigeration (up to 86°F / 30°C), they should be used within 4 weeks. Once opened, they can be kept at room temperature or in the refrigerator for a maximum of 4 weeks (28 days).
✅ Fiasp® PenFill®: If unopened and stored at room temperature (below 86°F / 30°C), it should be used within 4 weeks. Once in use, it must remain at room temperature for a maximum of 4 weeks (28 days). Do not refrigerate after first use.
✅ Fiasp® PumpCart®: If unopened and stored at room temperature (below 86°F / 30°C), it must be used within 18 days. After first use, it can be kept below 98.6°F (37°C) for up to 4 days. The total time at room temperature must not exceed 18 days, including use in the pump. Do not refrigerate after first use.
Related article: Can You Use Insulin That's Been Left Out for 1 Hour or Overnight?
Fiasp Expiration: How Long Is Your Insulin Good For?
📆 Fiasp comes with an expiration date printed on the packaging and on the pen, vial, or cartridge itself. If stored properly in the refrigerator, it remains safe to use until this date.
⏳ The in-use period for Fiasp varies depending on the format. Fiasp® FlexTouch® and vials must be used within 28 days after first use, whether stored at room temperature or in the refrigerator. Fiasp® PenFill® should also be used within 28 days, but it must remain at room temperature-do not refrigerate after first use. Fiasp® PumpCart® has a shorter in-use period: it can be kept at room temperature for up to 18 days, including 4 days in the pump, but should never be refrigerated after first use.
Labeling your insulin with the date you first use it can help keep track of its expiration and ensure safe usage!
Related article: Does insulin expire? How long is it good for?
How to Tell If Fiasp Has Gone Bad
If you suspect your Fiasp insulin is no longer effective, look for these warning signs:
- ⚠️ Cloudy or discolored liquid - Fiasp should always be clear and colorless.
- ❌ Particles or clumps - Do not use insulin that appears grainy or thick.
- 🔥 Heat exposure - If insulin has been stored above 86°F (30°C) for extended periods, it may be compromised.
- ❄️ Frozen insulin - If Fiasp has been frozen, it should not be used, even if it has thawed afterwards.
If you notice any of these signs, do not use the insulin and dispose of it properly. If you have doubts whether your insulin has gone bad, ask for your doctor or pharmacist's advice before using it.
Traveling with Fiasp
Because of these strict storage conditions and temperature control, traveling with Fiasp, like with all insulins, can be quite daunting. Following a few best practices can help keep it cool and safe during your journey:
- 🎒 Use an insulin travel cooler to prevent exposure to extreme temperatures.
- ✈️ Carry extra insulin supplies in case of unexpected delays or loss.
- 👜 Keep insulin in your carry-on bag rather than checked luggage when flying with insulin.
- 🚫 Never store insulin in direct sunlight or in a hot car.
Related article: How to Travel With Insulin That Needs Refrigeration or Cooling!
Key Takeaways
✅ Proper storage of Fiasp is critical to maintaining its effectiveness. Refrigerate before first use, store at room temperature after opening, and always discard after its in-use limited period. If your insulin shows any signs of damage or has been exposed to extreme temperatures, replace it with a new one to ensure safe and effective blood sugar management.
We'd Love to Hear From You!
💬 Have you had experience storing and traveling with Fiasp? Do you have any tips or questions about keeping your insulin safe and effective? We'd love to hear from you! Share your experiences, tips, or questions in the comments below and join the conversation with others managing their insulin storage effectively.
