A test for the presence of antibodies in your blood

A test to check your antibodies may help you avoid getting a dangerous coronavirus strain.Here's how it works:Your blood is tested for antibodies, which are proteins that can fight disease.The antibodies are tested for in a lab in your local hospital.If the results are negative, you may not have any antibodies at all.If they're positive, you have antibodies.You can also test your serum, which is...