Test strip error occured
Your blood glucose value may be very low. If you have typical symptoms of a very low blood glucose, immediately follow your healthcare professional‘s instructions for such cases. Repeat the test afterwards.
You removed the test strip from the meter in order to apply blood and did not slide it back in it within 20 seconds.
The test strip was bent or moved while testing was in progress.
You applied too little blood or control solution to the test strip.
You waited too long before applying a second drop of blood or control solution. Start the blood glucose test from the beginning with a new test strip.