A test strip is a band/piece/strip of paper or other material used for biological testing.
Specifically, test strip may refer to:
Before using OneTouch® test strips and control solution, carefully read the User Guide and inserts that come with the components of the system.
OneTouch Ultra® control solution contains a known amount of glucose and is used to check that the meter and the test strips are working properly.
See full instructions in your User Guide on how to perform a control solution test.