Abbott FreeStyle Libre 2 User Manual page 134

Step
2
Check the test strip expiration date. Do not use expired test
strips as they may give inaccurate results.
3
4
Action
Open the foil test strip packet at the notch and
tear down to remove the test strip. Use the test
strip immediately after removing from the foil
packet.
Insert the test strip with the three black lines at
the end facing up. Push the strip in until it stops.
Note: The Reader's built-in meter turns off after 2
minutes of inactivity.
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