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What can cause one to have significantly different blood sugar level numbers within 40 seconds?

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Dr. Linda DiMeglio
Pediatrics - Endocrinology

In brief: Meter error

In general blood glucose meters are considered to be accurate if they give values that are within 20% of each other with repeated tests.
This means that sometimes numbers that might seem fairly different from each other are both within this margin of error. Depending on the meter differences in coding and the amount of blood filling the strip can also affect the glucose results.

In brief: Meter error

In general blood glucose meters are considered to be accurate if they give values that are within 20% of each other with repeated tests.
This means that sometimes numbers that might seem fairly different from each other are both within this margin of error. Depending on the meter differences in coding and the amount of blood filling the strip can also affect the glucose results.
Dr. Linda DiMeglio
Dr. Linda DiMeglio
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