This error means the test strip has been exposed to moisture or stored improperly.
What to do:
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Remove and discard the damaged strip.
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Repeat the test using a new strip from a properly stored package.
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Always store your strips in their original container, with the lid tightly closed after each use.
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Check the expiration date and avoid exposing strips to humidity, heat, or cold.
Your meter is ready to continue testing with a fresh, undamaged strip.