Check another: test to be sure. Sometimes when you leave the test for a while after the period of time that you were supposed to read it at, the lines would eventually show up. It depends on the manufacturer of these test strips and how good their control is. But make sure you read the test within the recommended time period after you run it. Thanks for trusting in HealthTap.
Answered 11/5/2015
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A doctor has provided 1 answer
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