When this happens, more often than not, it's the first test which is unreliable for any number of reasons.Libre 7.1
New GlucoNavii initially 10.2. Second immediate attempt 8.8. :-(
I used my current CodeFree and the GlucoNavii together yesterday and they were within 0.3 of each other every time, so I am pretty confident the GN is fine.When this happens, more often than not, it's the first test which is unreliable for any number of reasons.
You were right to retest.
If in doubt, a control solution to test the functionality of your new meter and test strips is available from your local pharmacy. When stored properly, they will keep for 12 weeks after opening and some last much longer.
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