Usually a viral test checks for the presence of nucleic acids of a virus in a throat swab sample. In contrast, a virus is a single substance that contains only nucleic acids and proteins. When the virus leaves the host cell, its proteins and nucleic acids break down, making it impossible to correctly determine the virus in the collected sample at the time of testing. Virus preservation solution can be used to submerge the virus sample in the sampling tube, inactivating the virus protein while releasing the virus nucleic acid for subsequent testing. With the outbreak of new coronaviruses, a large number of nucleic acid assays require virus preservation solutions to ensure the validity of the assay.

There are two main types of virus preservation solutions, inactivated and non-inactivated. Inactivated virus preservation solution contains biological buffers, lysis salts, etc., which can be used to determine whether a sample contains the characteristic nucleic acid of the virus, i.e. whether it is infected with the virus, by lysing and releasing the nucleic acid, and by using a virus PCR test kit for rapid detection.

The components of the non-inactivated virus preservation solution include Hank's buffer, which regulates the pH of the preservation solution to ensure a neutral environment for virus survival; a combination of antibiotics with antibacterial and antifungal effects; bovine serum albumin, a stabilizer of bacterial proteins, amino acids that provide essential nutrients for viruses; cryoprotectants that protect cells from solution damage and ice crystal damage, and glycerol for resistance to external temperature changes.

With the continuous progress of technology, Bofa produces virus preservation solution with stable quality and capacity up to 30-50 tons per day, which can ensure the demand of new coronavirus detection. The virus is merciless, there is love on earth, we work together to fight the epidemic, tide over the difficulties together, and hope the epidemic will end soon.