Your test is positive if it finds antinuclear antibodies in your blood. A negative result means it found none. A positive test doesn’t mean that you have an autoimmune condition.

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.

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

Learn about the hepatitis C antibody test, which is used to detect when someone has had the hepatitis C virus. ... A non-reactive or negative test result means that the person does not have the virus.

However, if someone tests negative with an antigen test but continues to experience symptoms, ... an antibody test can detect the presence of IgM, IgG, or IgA antibodies in your blood.

Did you know that certain medications can cause symptom of 'Antibody test negative'. Find these drugs listed on the page and be warned of similar symptoms as possible side-effects.

If your test is positive, meaning antibodies were present in your blood, this could indicate that there is an autoimmune condition affecting your thyroid gland. If the test is negative, it is less ...

Coronavirus immunity tests might return false negatives for people who experienced a mild or asymptomatic case of COVID-19. The conclusion comes from a new Oxford … ...