Antibody testing shows whether you've had the COVID-19 virus in the past. It's not the same as testing to see whether you have the virus now.

Medically reviewed by Laura Young, MD Key Takeaways A positive herpes IgG test means you have a herpes infection or have had one in the past.The herpes IgG test detects antibodies, not the virus ...

Population screening of asymptomatic persons with Epstein–Barr virus (EBV) DNA or antibodies has improved the diagnosis of nasopharyngeal carcinoma and survival among affected persons. However, the ...

Determining the specificity of HLA antibodies is arguably one of the most important contributions by the HLA laboratory today. For patients that have low-to-moderate levels of antibody, using a ...

The hepatitis A virus (HAV) antibody (AB) total test identifies both types of antibodies that the body produces in response to HAV infection. A reactive result means the test has detected HAV ...