• Negative: The red line in the control line (C line) region appears. No line appears in the test line (T line) region.

Negative result indicates that the content of the SARS-CoV-2 antigen in the sample is below the limit of detection or no antigen.

• Positive: The red line in the control line (C line) region appears and a red line appears in the test line (T line) region.Positive result indicates that the content of the SARS-CoV-2 antigen in the sample is higher than the limit of detection.
• Invalid: Once the red line in the control line (C line) region doesn’t appear which will be treated as invalid.