The Trump administration has posted an update to its plan to reopen the U.S. economy, this time with a slightly different twist on testing. This plan not only calls on local governments to administer tests for the SARS-CoV-2 virus, but also calls for two antibody tests per person under some circumstances, an approach that should beef up both the positive and negative predictive values compared to a single antibody test.
Siemens Healthineers AG expects to have a total antibody test available in late May 2020 to identify individuals exposed to the SARS-CoV-2 virus that causes COVID-19. The rapid diagnostic test detects IgM as well as IgG and other antibodies in the blood.
The COVID-19 pandemic has moved rapidly over the past few weeks, and Ortho Clinical Diagnostics Inc. is doing its part to help during the crisis. To that end, the Raritan, N.J.-based company has worked to successfully secure an emergency use authorization (EUA) for its total antibody assay for COVID-19, the Vitros Immunodiagnostic Products Anti-SARS-CoV-2 total reagent pack and calibrators.
The age of molecular testing for the COVID-19 pandemic is still with us, but the emphasis in the months ahead will be on serological testing as a quicker, more useful mass testing alternative. However, test developers have a number of hurdles to overcome in devising these serological tests, including that antibodies for the virus’s antigens emerge at different times in the disease cycle, just one of several challenges that have to be met in the effort to bring the SARS-CoV-2 virus to heel.
The U.S. FDA’s routine guidance agenda may be badly disrupted by the COVID-19 outbreak, but the agency continues to pump out guidances and emergency use authorizations (EUAs) directed to the pandemic. While the FDA has included only one serological test under the diagnostic EUA paradigm, Rep. Diana DeGette penned a letter inquiring into when the agency intends to move more decisively on serological tests, arguing that the absence of action on this front endangers the nation’s economic health as well as the public’s health.
