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Lateral Flow False Positive. New analysis of community testing data shows lateral flow tests to have a specificity of at least 999 This means fewer than one false positive in every 1000 lateral flow tests carried out. But theres also a potential mathematical explanation given neither test is 100 reliable.
How To Ab Use A Covid 19 Antigen Rapid Test With Soft Drinks International Journal Of Infectious Diseases from www.ijidonline.com
As the diagram below shows upwards of 96. If the lateral flow test is positive due to the blood and the PCR test is negative then is it safe to say its the blood. A Cochrane review from March 2021 assessed over 60 studies all of which looked at the accuracy of various lateral flow tests.
However if your clinical opinion is that covid-19 is likely then a positive test is likely to be reliable.
Posting a photo of a vaguely positive lateral flow to Instagram London-based AE doctor Nathan explained what it could mean. They are designed for people who are asymptomatic - those who dont have symptoms. The false positives had exclusively come from NHS lateral flow tests provided by Xiamen Biotime Biotechnology. As the diagram below shows upwards of 96.
