Is it OK to keep insulin in freezer?

Do not store your insulin near extreme heat or extreme cold. Never store insulin in the freezer, direct sunlight, or in the glove compartment of a car. Check the expiration date before using, and don’t use any insulin beyond its expiration date.

Will freezing insulin ruin it?

Microscopic examination and particle size distribution studies showed that freezing and thawing produced clumping of insulin particles and some crystal damage.

What happens if insulin is kept too cold?

When insulin spoils from too hot or too cold temperatures

For people with Type 2 diabetes, it can mean a rapid spike in your blood sugar and ongoing difficulty managing your blood sugar depending on how long you continue to use that spoiled insulin.

How do you keep insulin from freezing?

Insulin stored in the refrigerator can sometimes freeze, too. Keep it closer to the door of the fridge to prevent this. If you think that your insulin has frozen, throw it out and start a new vial, pen or pump reservoir. The protein in frozen insulin denatures and won’t work in the same way.

Where should insulin be stored in the refrigerator?

Long term storage of insulin should be in the fridge and ideally in the top shelf in the door where butter, cheese and eggs are usually stored. Once used an insulin pen or vial can be kept at room temperature for up to 30 days.

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Should insulin be kept in fridge?

Insulin that is not in use should be stored in the refrigerator. If refrigeration is not possible, it can be kept at room temperature [15-25 degrees C] for 28 days. The in use vial may be kept at room temperature [15-25 degrees C] for 28 days.

How long does insulin last in refrigerator?

Insulin products contained in vials or cartridges supplied by the manufacturers (opened or unopened) may be left unrefrigerated at a temperature between 59°F and 86°F for up to 28 days and continue to work.

How long can insulin be stored in the fridge?

Open vials can be stored at either room temperature or in a refrigerator for up to 28 days. If you choose to store your vial in the refrigerator, allow your insulin to warm up before injecting it.

Can I put insulin back in the fridge?


Unused (unopened) insulin vials, devices, or cartridges inadvertently left at room temperature can be returned to refrigeration but must be used within designated days of initially being stored at room temperature (see Tables 1 and 2).

What is the proper way to store insulin?

Throw the insulin away 28 days after opening it. Once you open a vial, keep it stored in the fridge or at room temperature. Be aware that injecting refrigerated insulin may be painful. Keep an insulin pen refrigerated until you open it; after that, you can store it at room temperature.