Rule fills testing gap: From June 10, 2026, observed urine tests will be used when oral fluid testing is required but no certified labs exist. Broad worker impact: Truck drivers, pilots, rail, transit ...

Understanding your lab results is key to managing your health. Learn what common tests mean and how to talk to your doctor.

Biohacker Bryan Johnson recently bragged about his girlfriend's “top 1%” vagina as the at-home vaginal microbiome test ...

New research suggests a simple urine test could help spot conditions including bipolar disorder, ADHD and anorexia much ...

Urinary free cortisol expressed as times above the upper limit of normal is a strong discriminator between ectopic ...

Identification of microbes joins together the discipline of microbiology with the study of infectious diseases. Methods of reliable and accurate microbial identification are valuable to a wide range ...

Christina Majaski writes and edits finance, credit cards, and travel content. She has 14+ years of experience with print and digital publications. Khadija Khartit is a strategy, investment, and ...

At-home gut health tests use DNA or RNA sequencing from a stool sample. Testing your gut health cannot replace an official diagnosis from a doctor. Your results may provide insights into gut ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Robert Kelly is managing director of XTS Energy LLC, and has more than three decades of ...

Radiolab is on a curiosity bender. We ask deep questions and use investigative journalism to get the answers. A given episode might whirl you through science, legal history, and into the home of ...