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Using another control solution could present incorrect results. Remove a test strip from the bottle. Tightly close the bottle lid Immediately after you have removed the test strip. NOTE: Check the expiry and discard date. Make sure the test strip does not appear torn or damaged. Hold the test strip with the grey end facing up. Insert the grey end into the test strip port on the meter. The meter will turn on. A test strip with a flashing blood drop will appear letting you know the meter is r