Question about insulin syringes

Discussion in 'Feline Health - (The Main Forum)' started by trixie942, Oct 12, 2017.

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  1. trixie942

    trixie942 New Member

    Oct 12, 2017
    My kitty is on 3.0 units of insulin, twice a day.
    I just bought new needles from Shoppers instead of the vet, because it is cheaper.
    The first picture is her old needle, which is marked up to 40 units...
    The second picture is one of her new needles, which is obviously way skinnier and it is marked up to 30 units


    I have U40 insulin. Am I right in thinking that for the equivalent of 3.0 units in a U40 syringe is 7.5 in a U100 syringe? Please help!!!
  2. Red & Rover (GA)

    Red & Rover (GA) Well-Known Member

    May 18, 2016
    I am assuming you use Vetsulin.

    It is recommended that only experienced owners use U100 syringes. You don't want to overdose the cat. Are you home testing blood glucose levels?

    Hoping someone with knowledge of this issue comes online soon. In the meantime, here is a conversion chart for U100 syringes.
  3. JeffJ

    JeffJ Well-Known Member

    Jul 7, 2016
    If the needle box says U100, then the syringes deliver the same dose. You do need to do the conversion if you use U100 syringes and U40 insulin. I did it last year and it's not hard at all. Plus the U100 needles I had were a lot smaller and easier on Leo.
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