What is the condition of the new crown test where the second bar is very shallow

A New Crown test with a very light second bar and a normal first bar indicates a weakly positive result, suggesting that the person being tested may be infected with the New Crown virus.
The New Crown test has two bars, the first bar belongs to the quality control area and the result is valid only if the first bar shows normal. If the first bar does not display or displays incompletely, the result is invalid and a new test is required.
If the second bar is very shallow and the first bar is normal, the test is weakly positive, indicating that the person may be infected with the New Crown Virus, possibly in the early stages of infection, and therefore weakly positive, and further nucleic acid testing is required to confirm the diagnosis.