I know that meters can be out but that is surprising and could change a reading quite dramatically. I have sometimes re-tested but got the same reading, as a rule, although I'm sure I've read that even using different fingers can make a difference?
Fingers crossed I have no symptoms, but it can be hard to judge as I'm in the Perimenopause age too and that can make you dizzy, feel off, etc. I will keep an eye on it and I record the results too. Thank you Helen.