Blood transfusions save lives, but there's short supply. What if transfusions don't always require blood? New research indicates an alternative.

Convalescent plasma, once thought to be an effective way to treat people with mild to moderate COVID-19, doesn't really work, a new study shows.

Measuring cerebral blood flow is important for diagnosing strokes, and for predicting secondary damage in hemorrhages or traumatic brain injuries.

An organ-on-a-chip device could offer a more personalized treatment for sickle cell disease, which affects 70,000 to 100,000 Americans.

Liquid biopsies can gauge the effectiveness of therapy for colorectal cancer that has begun to spread beyond the original tumor, researchers report.

A new lab-on-a-chip device called real-time ELISA combines blood tests to provide something more like a movie than a photo.

People with severe COVID-19 and a secondary blood infection had longer hospital stays and poorer outcomes, research finds.

A more precise screening index could monitor chronic lead exposure, say researchers. They started with Atlanta, but say the approach could work elsewhere.

An enzyme from papayas can turn pig blood into protein powder, report researchers. Right now, the blood ends up in animal feed.

Early trauma changes metabolites in the blood, researchers find. Those changes can be passed down to the next generation, too, experiments with mice reveal.