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that gives a mean of 103 +/- a standard deviation of 8.8, though it is a small population of numbers though on which to do statistics. the fact is that is probably what one can expect for this type of assay. that is sufficient accuracy for what you need to know. if you were fasting and it reads 140, that is probably 140 +/- 10, and you know you need to get it down to 90 +/- 10. if its 2 hr after a meal then 140, +/-10 is ok, assuming it comes down later. don't get hung up on the exact value, the test isn't good enough for that, it's the trends and correlations that can be gleaned that are of value and the instrument is good enough for that.

awhile ago, somebody found some difference between their right hand and their left hand and got hung up about that, it is just the accuracy of the meter + strip variation - humidity, temp, breezes, sunlight etc.
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