Non-Inactivated VTM Tube, non-inactivated transport media are made of inert materials that are designed to maintain the viability of clinical specimens that contain viruses. They suppress microbial contamination and provide protection for samples during transport and processing. They are a convenient alternative to traditional inactivating transport media. These non-inactivating media are commonly used in diagnostic tests, where samples are collected with oropharyngeal and nasopharyngeal swabs.