Aviva Expert Meter Discrepancies

I use the Aviva Expert Meter for testing & dose calculation. I did a test and the meter showed a reading of 9.9. I forgot to enter the carbs I was going to have for my meal so I switched the meter off and did a second test about one minute later using the same finger. This time the meter gave a reading of 12.6.Obviously this is a significant variance with the consequence of a difference in the dose of insulin taken to cover the meal.
Is this normal or is there a fault with the meter?

i think a mmol or two to be out, i would was hands and test another finger and just go with it....

It's quite common to get readings that are about 1 mmol/L different on consecutive readings. Blood glucose meters need to be accurate to within 20% of the true reading, so the first reading indicates that your true result was between 7.9 and 11.9.

Your second reading indicates a true reading somewhere between 10.1 and 15.1. Therefore, your true result based on both readings is likely to have been between 10.1 and 11.9.

Having said that, when I first got an Aviva Expert, I compared readings from it with four other meters all using the same blood stream, and within seconds of each other. I found the Expert was always a couple of mmol/L higher than my other meters which were all within 1 mmol/L of each other.

I called Accucheck and complained, and they got me to send back the meter and test strips for testing, and sent me out a replacement meter. I've had no trouble with the replacement meter.

If you feel that the meter is inaccurate, ask Accucheck to send you a replacement and test yours. It is my favourite meter - about as close as you can be to being on a pump while being on MDI and has certainly helped my HbA1c come down significantly.