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If you removed the test stick, or it fell out, at any point after you placed it in the test tube, the result of the test is not valid even if you immediately replaced the test stick. The test stick must remain in the test tube for at least 20 minutes as shown in the instructions. Therefore, do not consider your result an accurate indication of your
What is "I mistakenly/accidentally removed the stick (or it fell out) from the vial early (before 20 minutes). Will my result be valid? "