At-home food sensitivity tests, specifically IgG tests, do not reliably identify triggers for food-induced conditions. Allergy societies recommend against their use for food sensitivities and ...

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.

It's been nearly four years since people started getting sick with COVID-19, but with new variants mutating each season, the health steps experts asked us to take at the beginning of the pandemic ...