What does it mean to have two bars, one light and one dark, on a new coronavirus antigen test?

The New Crown Virus Antigen test has two bars, one light and one dark suggesting that the patient may be weakly positive for infection. The test area of the New Crown Antigen self-test kit is divided into a quality control area and a detection area. If a bar does not appear in the quality control area, the kit is invalid and needs to be replaced. If a bar appears in the quality control area and a bar appears in the detection area, it is considered positive. The presence of color in the detection zone and a lighter color is considered weakly positive, which means that the patient has a low amount of NeoCoronavirus in the body or the patient is in the incubation period of NeoCoronavirus infection. If two bars, one dark and one light, appear on the test using the kit, it is recommended that the patient be tested for New Crown virus nucleic acid in the hospital if a definitive diagnosis is needed.