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[General] The test result was negative in 10 minutes, but later the test line showed up very weak purple color. Is it positive result?

Q: The test result was negative in 10 minutes, but later the test line showed up very weak purple color. Is it positive result?



A: We recommend the test results should be interpreted within 10 minutes. Sometimes non-specific binding after 10 minutes may cause false test line due to the characteristics of lateral-flow technology and please disregard the results after 10 minutes. In case of low titer sample, you may see very weak line within 10 minutes. However in such case, you need to make decision based on the comprehensive information including clinical symptoms, history, available test results and other information.





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