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To Get Back to Work, Companies Seek Coronavirus Tests for WorkersTesting workers for Covid-19 could

Updated: May 20, 2020

WSJ Articles

Reopening the economy will depend on companies diagnosing coronavirus cases in the workplace.

The FDA has issued an emergency use ruling for blood or “serology” tests that can look for antibodies. Your body makes them when you’ve had an infection. These COVID-19 tests spot two types of antibodies:

  • IgM, which your body makes for about 2 weeks before the levels drop

  • IgG, which your body makes more slowly (within about 4 weeks) but which usually last longer

WEBMD article on Antibody testing

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This test has been widely used in the Asian and European markets


For US market, we have received EUA (Emergency Use Authorization), and the products also can be sold with this special warning statement on package "The test has been reviewed by the FDA and results from antibody testing should not be used as the sole basis to diagnose or exclude SARS-CoV-2 infection or to inform infection status.