Add Yahoo as a preferred source to see more of our stories on Google. There are certain things antibody tests can (and cannot) tell us about our immunity to COVID-19. (Photo: Yulia Reznikov via Getty ...

LOS ANGELES (KABC) -- U.S. regulators issued new guidance this week shortening the time that people who received Moderna or Pfizer's COVID-19 vaccine have to wait for a booster, and it's different ...

ATLANTA — Covid-19 vaccine booster shots are going into arms across the nation, and some people are turning to the Verify team asking whether they can check their immunity before getting another dose.

If you are looking for a single magical number to tell whether you can be more lax on Covid-19 precautions, sorry, but the level of antibodies in your blood is not going to provide it. Antibodies aren ...

In recent days, Gov. Gavin Newsom has promoted a new antibody test that could determine who is immune to the coronavirus. He said Monday it will be “foundational, fundamental” to the state’s plans to ...

A type of COVID-19 test rushed out in the early days of the pandemic, before vaccines became widely available, isn’t much use any more for most people, doctors say. So-called antibody blood tests can ...

MECHANICSVILLE, Va. -- A Mechanicsville resident reached out to the CBS 6 Problem's Solvers after he said an antibody test he received after his COVID-19 vaccination showed no antibodies in his system ...

People would like to know whether their COVID-19 vaccine is protective enough or a previous infection will keep them safe. Experts warned that taking an antibody test isn’t a good way to find out. The ...

LOS ANGELES -- U.S. regulators issued new guidance this week shortening the time that people who received Moderna or Pfizer's COVID-19 vaccine have to wait for a booster, and it's different than the ...