PEOPLE who get a negative antibody test results may still have had coronavirus, scientists say. Experts have cast doubt on the effectiveness of antibody tests – which tell whether you’v… ...

Negative COVID-19 antibody test. A negative result means antibodies weren't detected in your blood sample. There are various reasons why: You haven't been infected with SARS-CoV-2 previously.

If you experienced symptoms and tested negative but still think you had COVID-19, you can take an antibody or serology test, which according to the Centers for Disease Control and Prevention (CDC ...

Discover what non-reactive HIV test results really mean and why testing timing, window periods, and retesting are crucial for ...

Unless you test negative for the virus itself, you could still be infectious, Varga said. Plus, he said, it’s too soon to know how long any immunity could last.

A negative antibody test tells you that you don't have harmful antibodies in your blood. If you're also Rh-positive, you can safely carry a baby with either a + or - blood type.

The actress said she tested negative for coronavirus twice at the end of March and had initially received a negative result in her COVID-19 antibody test after she was "feeling a bit better" ...

CHARLOTTE, N.C. — A COVID-19 shot is not a 100% guarantee against getting sick with the virus. So, are there ways to test if the shot worked for you? There are antibody tests on the market, and ...