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Use By Dates on Active Insulin vials - Pen Injectors

Discussion in 'Diabetes Discussions' started by leslie10152, Feb 25, 2017.

  1. leslie10152

    leslie10152 Type 2 · Well-Known Member

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    From what I have managed to glean from various sources - a vial of insulin used in a pen injector should be discarded after 25 days of use. Not being refrigerated, it is subjected to room temperature or ambient temperature depending on how it is stored in transit.

    From my own experience, I have noticed that insulin over a certain time frame tends to be less effective. Seasonal temperatures can play a significant role in the performance of insulin over time. I date all vials used in my Novopen3 and Lantus pen to 25 days in winter and 20 days in summer to avoid expiry of insulin. Better safe than sorry!;)
  2. egontoast

    egontoast Type 2 · Member

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    Out of fridge 40 days, in fridge untill use by date.
  3. TheBigNewt

    TheBigNewt Type 1 · Well-Known Member

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    If one uses 15 units/day a pen will last maximum 20 days if you get every last drop out of it and don't purge any air. Most people use at least 15/day right?
  4. Jaylee

    Jaylee Type 1 · Moderator
    Staff Member

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    Hi Big Newt,

    You were "joshing" about not purging the air??
    Gosh! I hope so.... ;)

    15 of what basal or bolus...? People do have different insulin requirements...
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