Your blood contains a wealth of information about the state of your health. Analyzing the levels of each component is an important part of diagnosis.

A new device that uses a blood sample can tell if a lung cancer treatment is effective at the four-week mark.

A blood test in midlife may predict risk of cognitive decline and Alzheimer's later, according to a new study.

A new "lab on a chip" that can be 3D-printed in just 30 minutes could make on-the-spot medical testing widely accessible.

Inert ingredients are added for purposes other than killing pests and are not required under federal law to be tested for safety or identified on pesticide labels.

Mailing HPV test kits directly to patients increases cervical cancer screening rates, a new study shows.

A new rapid test can detect both HIV and tuberculosis at the same time with just a small amount of blood, researchers report.

Measuring water loss from the skin can predict anaphylaxis during oral food challenges before it becomes clinically evident, say researchers.

A highly sensitive blood test can detect a key protein produced by cancer cells in as little as two hours, researchers report.

Horseshoe crabs play a unique role in medicine, but they’re also ecologically important in their home waters along the Atlantic coast. Can regulators balance the needs of humans and nature?