Virus Transport Medium is for the preservation and transportation of virus, chlamydia, mycoplasma and ureaplasma. 

The inactivated VTM is composed of guanidine salt, sodium acetate, DTT, etc., It can inactivate RNase while inactivating the virus to ensure the integrity of the nucleic acid, so as to make the virus lose its ability to infect, cause disease, and reproduce, but does not affect the primary structure of the virus protein.