But, as always, your COVID test results — whether positive or negative — are only helpful if you know how to interpret them. While most people will clear the virus and get a negative antigen ...

In recent years, the familiar symptoms of the flu might kick us into reaching for at-home testing kits. But on the eve of the ...

A SERUM that identifies a new blood-group antigen was obtained from the ... and whose cells gave a positive direct Coombs's test. On routine testing of Mrs. Kidd's serum at that time, it was ...

Assays for hepatitis B surface antigen (HBsAg) are the most frequently ... testing and also to ascertain likely cause of weakly positive (grayzone) results. Results During the 17 month study ...

While one antibody/antigen test is available, the other tests look for antibodies only ... In a setting with low prevalence of HIV, staff may not see enough true positive samples to gain experience in ...