Hi Lesley, most people find that different injection sites have different rates of absorption, so this might be part of the reason for the change. Are you using the upper arm, towards the back of the arm? What sort of differences are you seeing, and when are you testing after injecting?
Must admit, I have never used my arms - my most 'popular' injection site is a random place on my bottom/hips (when I say 'random', I mean I try and use a different place each time, and alternate cheeks - sorry if that's too much information!
😱 😉)
This diagram shows the general differences in rates of absorption of the different sites, although it can also vary from person to person. Speed is also faster if you inject somewhere that has a lot of muscle use e.g. arms if doing a lot of lifting, legs if running.
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