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Freezing Insulin

Discussion in 'Parents of Children with Type 1' started by ashtensmom, Jan 9, 2012.

  1. ashtensmom

    ashtensmom Approved members

    Jun 24, 2011
    A few days ago I read a thread questioning whether their insulin is still good after being in the car in cold temps for a few days. It got me wondering whether you can notice whether or not insulin had been frozen and then thawed. Anyway, I took an old pen vial and put it in the freezer for experiment (warning put it in a baggie in case the expansion from freezing pops the rubber bung off). When it is frozen, it is obvious... it solidifies and turns cloudy. However, once thrawed, there is no difference and no telltale signs of it ever being frozen. I was hoping that it would be cloudy or lumpy so that if the pharmacies/suppliers ever left it too long in the cold during shipment, that we can tell. But this is not the case. Just FYI for those who may be interested. I did not take the time to call the manufacturer to ask if insulin is still stable to use for a period once frozen or if it is ruined immediately.
  2. Lisa P.

    Lisa P. Approved members

    May 19, 2008
    Thanks for doing this and posting this.

    Sometimes we get very strange results from insulin, it doesn't go as predicted, but I just chalk it up to diabetes being what it is. But our fridge is really cheap and we often have food that freezes in sections. I put the insulin on the door, but lately I've wondered if it might freeze and thaw. Probably not, but I'll be watching this thread closely. Thanks for bringing it up.
  3. KatieSue

    KatieSue Approved members

    Oct 5, 2010
    Since we had our last power outage here I wondered if my insulin was at the right temp. I had it in the door. So I got a fairly inexpensive remote thermometer so I could monitor. The door was actually too warm, well it was like 48 and recommended temp was something like 36-46.

    So I experimented around to figure out which area of the fridge had the right temps.
  4. thebestnest5

    thebestnest5 Approved members

    Aug 16, 2006

    Lisa, last year, I decided to put L's insulin in a small Igloo cooler with a flat top, to keep the temperature more stable for the insulin while it's in the fridge. This protects it from freezing, door being left open...
    I leave the insulin in the small box the vial is in.

    OP, thank you for doing this.
  5. Connor's Mom

    Connor's Mom Approved members

    Nov 10, 2011
    I moved ours from the door last year because it seemed like a new vial would only last 2 weeks then his numbers would start to climb. Sometimes the new vial seemed to not work at all. I put them in our snack drawer and they have seemed much more stable.
  6. Lovemyboys

    Lovemyboys Approved members

    Sep 19, 2010
    Thanks for doing that experiment! I was hoping you would say that it remained clumped, then I might have tried our "left in the car" insulin. If insulin is as temperature sensitive as they say it is, you would think they could put a sensor or something on it that turns black when it gets out of its temperature range.

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