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.

A unique group of neurons lights up in female mosquitoes only when they're eating the combined ingredients of blood, researchers report.

A wearable device could one day help EMTs, medics, and ER doctors assess blood loss to better treat victims of accidents, gunshots, and battle injuries.

Detecting a specific kind of protein in a blood test could help diagnose Alzheimer's disease far before symptoms begin to appear, reasearchers say.

Thinner tissues in replacement heart valves can create a problematic and even damaging flutter, new research shows.

Fewer than 1% of the 10,000 samples from Canadian blood donors tested positive for antibodies to the novel coronavirus, initial results show.