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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Grail's Galleri test screens for more than 50 different types of cancer from a single blood draw. (Getty Images) (Getty Images) If ...

Ducharme is a contributor to TIME. A nurse practitioner administers COVID-19 tests in the parking lot at Brockton High School in Brockton, Mass., on Aug. 13, 2020. A nurse practitioner administers ...

Cancer is a condition where some of the body’s cells grow and divide in a way that can be difficult to manage. Typically, the growth and division of cells is tightly managed and there are many genes ...

The best type of COVID-19 test to take depends on why you’re getting tested. Some tests are best for diagnosing current COVID-19 infections while others can identify past infections. Others are better ...

Genetic testing for chronic myeloid leukemia (CML) can tell doctors if someone has leukemia, what type they may have, and whether treatment is working. The tests look for atypical changes in certain ...

Successful treatment of pancreatic cancer can depend on a timely diagnosis. Various tests can help doctors rule out cancer or decide whether further testing is necessary. According to the American ...