The solution of this product is based on Hank's buffer, the solution also contains
inorganic salts, amino acids and protein stabilizing ingredients. The Viral Transport
Medium Tube has a stable osmotic pressure, providing a stable delivery and storage
environment for the samples of nasopharyngeal swab and oropharyngeal swab. The
samples should be sent to the laboratory for testing after collection to determine
whether the collected sample is infected with virus.