Elizabeth Dennis describes the testing process following a new lung cancer diagnosis. Initial tissue biopsy is sent for next-generation sequencing (NGS), although repeat tissue sampling or liquid ...

Vitamin D tests involve taking a blood sample to measure the vitamin D levels in your bloodstream. There are two forms of vitamin D in the blood: 25-hydroxy vitamin D, or calcidiol, and 1,25-dihydroxy ...

As the various subvariants of omicron continue to circulate in the U.S., rapid at-home tests remain an important tool for protecting yourself and others. Home tests are appealing because they allow ...

Allergies can be triggered by a variety of things, including indoor and outdoor irritants, as well as foods. If you notice allergy symptoms in your child, make an appointment for them with a ...

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 ...

We tested the best vitamin deficiency tests from LetsGetChecked, Everlywell, and LabCorp, and our testers found them easy to use and informative. Learn more about the best vitamin deficiency tests ...

At-home STD tests offer convenience and privacy while testing for sexually transmitted diseases (STDs). These diseases are also called sexually transmitted infections (STIs). If you're sexually active ...