NEW DELHI: The latest bottleneck to confront the Indian healthcare system in scaling up molecular diagnostic testing for Covid-19 is shortage of tools and equipment needed to collect and transport samples called the viral transport mediums (VTM). After shortage of testing kits, India is falling short of VTMs which are essentially the kits that contain the transport media in a tube as well as the swab. NEW DELHI: The latest bottleneck to confront the Indian healthcare system in scaling up molecular diagnostic testing for Covid-19 is shortage of tools and equipment needed to collect and transport samples called the viral transport mediums (VTM). After shortage of testing kits, India is falling short of VTMs which are essentially the kits that contain the transport media in a tube as well as the swab.