A potential exposure to human immunodeficiency virus (HIV) might make someone wonder how soon they can get results from a test. Some HIV tests can conclusively detect the virus in as little as 6 weeks ...

U.S. health officials are increasingly proposing pooled testing -- mixing several people's biological samples and examining them in a single test -- to drastically boost the country's capacity to ...

If you don't feel well, you may worry that you have COVID-19. The only way to know for sure is to take a test. At-home tests can tell whether you have the virus right now. More specialized antibody ...

With Covid-19 cases up across the country, many people are once again relying on home tests to guide decisions about going to work and sending their kids to school and other activities. A lot of those ...

A polymerase chain reaction (PCR) test detects genetic material from a pathogen or abnormal cell sample. Ways of collecting samples include a nasal swab, a saliva swab, or taking a sample of blood.

In celiac disease, the immune system reacts to gluten exposure and attacks the tissues in the gut, causing inflammation and damage to the small intestine. At-home celiac tests will report on a range ...