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Test strip inserted incorrectly or Insert the test strip correctly incompletely with the contact bars end first and facing up. Push it in until it will go no further. Defective meter or test strip Call 1 800 663-5521. If the test does not start after applying the sample: POSSIBLE CAUSE WHAT TO DO Insufficient blood sample Repeat the test with a new test strip and a larger sample. Defective test strip Repeat the test with a new test strip. Sample applied after automatic Repeat the test with a new