Healthcare T cell shortage linked to severe COVID-19 in elderly; antiseptic spray may limit virus spread Updated : September 19, 2020 12:57 PM IST Not all COVID-19 antibody tests are equal. Some COVID-19 antibody tests are much more reliable than others. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.