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Single Drug Test Strip: Invalid If a color band is not visible in the control region, or a color band is only visible in the test region, the test is invalid. You should repeat the test with a new test Strip. If the test ...

Ovulation Test Cassette: Invalid: No visible band at all, or there is a visible band only in the test region and not in the control region. Repeat with a new test kit. Contact Us: Phone: +86-20-82109823 Website: ...

Ovulation Test Midstream 4.0mm: Invalid: No visible band at all, or there is a visible band only in the test region and not in the control region. Repeat with a new test kit. Contact Us: Phone: +86-20-82109823 Website: ...

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