The sampling swab kit contains a swab and a liquid-based cell preservation solution. After the sample is collected using the swab, it is stored in the liquid-based cell preservation solution to ensure the integrity of the sample's DNA, and can be transported and stored at room temperature for a long time. Nasopharyngeal Flocking Swab Kit https://www.microbialtec.com/nasopharyngeal-flocking-swab-kit-item-15.html