The RT-PCR test works by identifying the RNA traces of the coronavirus through a swab sample taken from a person’s nose or throat. However, false negatives can occur at about 30 per cent of the time, as there are a lot of stages during the collection of the sample, where contamination may lead to errors.

The RT-PCR test works by identifying the RNA traces of the coronavirus through a swab sample taken from a person’s nose or throat. However, false negatives can occur at about 30 per cent of the time, as there are a lot of stages during the collection of the sample, where contamination may lead to errors.