Nucleic acid self-test generally refers to the Neo-Crown antigen self-test, where two bars may have false positives. A positive nucleic acid antigen test means that there is a possibility of infection with the novel coronavirus and another nucleic acid test is needed to confirm the infection.
A two-bar nucleic acid antigen self-test refers to the presence of bands in the C and T regions of the nucleic acid antigen test, which indicates that the nucleic acid test result is positive, but the accuracy of the nucleic acid antigen test result is not high.
Moreover, the test results can be false-positive if the test taker makes a mistake when performing the nucleic acid antigen self-test. A positive nucleic acid antigen test result can only indicate that the patient may be infected with the novel coronavirus. However, a two-bar nucleic acid self-test cannot be used to confirm a diagnosis of novel coronavirus infection, and the patient needs to undergo further nucleic acid testing.
The presence of two bars on the test may be a false positive, and it is recommended that patients who have two bars on the test should seek prompt medical attention and undergo nucleic acid testing. Patients diagnosed with novel coronavirus infection need to be isolated and treated.