A new blood test accurately detects a protein that indicates Alzheimer's disease, researchers say. It may change the way we diagnose and treat the disease.

Expanding coronavirus testing is one of the most important tasks public health officials are tackling right now. But questions over accuracy of the two main types of tests have rightly caused concern.

A new blood test can safely detect 26 undiagnosed cancers, according to a study of more than 9,000 women.

A blood test may offer a way to detect the most common form of pancreatic cancer while still in its early stages, a new study shows.

After your body fights off an infection, antibodies remain in your blood. Two researchers explain how tests identify these antibodies and what the data can be used for.

A new "scorecard" that looks at 29 different genes could be a tool to improve cancer diagnosis. It may also help predict patient survivability.

When tested with people with easy-to-access veins, a blood-drawing robot had a 97% success rate. That's just as good and even better than phlebotomists.

Artificial intelligence can check blood samples to predict and explain the progress of neurodegenerative diseases like Alzheimer's, researchers report.

A new blood test for children with bacterial pneumonia may determine the cause of painful inflammatory lesions of the skin and mucous membranes.

A simple blood test could offer a way to monitor very early signs of melanoma of the eye, researchers say.