What does a negative result mean — can I trust it? — TEST for COVID-19 SARS-CoV-2 - INTRANASAL

A negative result means the test did not find SARS-CoV-2 antigens in your nasal sample at the time of testing. It does not guarantee that you are not infected. The test is qualitative, so it only tells you whether the target was found or not, and the detection depends on the amount of viral material in the sample.

There are several reasons a negative result can be misleading. The sample may have been taken too early, before the virus reached detectable levels, or too late, after the viral load dropped. The sample may also have been collected incorrectly — for example, the swab was not rotated enough, or the buffer steps were not followed as instructed. If you have symptoms that continue, if you had a high-risk exposure, or if the result does not match how you feel, the correct step is to repeat the test or to seek professional advice.

In practical terms, a negative result is most reliable when the test is done in the right window, with a properly collected sample, and read at the correct time. If you are using the test before meeting others, a negative result reduces the risk but does not eliminate it. The test is a screening tool for decision-making, not a substitute for professional assessment.