What does it mean to get a C in a bar in COVID-19?

One section of COVID-19's test C is negative.

Novel coronavirus antigen test is a test method to check whether you are testing novel coronavirus at home, which has the advantages of rapidity and rapidity. When detecting the antigen of left heart coronavirus, it is necessary to drop the liquid into the antigen kit, and the antigen kit will have two areas of CT, and the detection result will be judged according to the disappearance of strips in different areas. Usually there is a bar in area C, and no bar in area T means negative, indicating that the tester is in a normal state.

If there are bars in both areas of CT, it means positive, and other display results are invalid and need to be re-tested. Although the accuracy of novel coronavirus antigen detection is high, it may also lead to errors in the detection results due to operational errors, expired kits and other factors. If you are worried about false negative, you can do the original test again, or go to the hospital to do relevant tests to find out whether you are infected with novel coronavirus.

Matters needing attention in COVID-19 test

Under the condition that the sample is pollution-free, the operation is correct and the antigen detection reagent has not expired, the detection result is more accurate. If the quality control area C is displayed as a bar, it means that the patient is not infected by novel coronavirus. At this time, patients need not be too nervous. If there is no discomfort, they don't need to do special treatment. Pay attention to daily protection, wear a mask when going out and avoid going to places where people are concentrated.

Novel coronavirus antigen test may have false negative or false positive results, so it can not be used as a substitute for nucleic acid, nor is it the gold standard for diagnosing novel coronavirus. If patients have false positive results, they can go to the hospital for nucleic acid testing, which is conducive to the accuracy of the results.