By shining a laser on a drop of blood, mucus, or wastewater, researchers can use the light reflecting back to positively identify bacteria.

More people in the US get cancer screening when employers are mandated to provide paid sick leave, research finds.

A new diagnostic test is 10X better than state-of-the-art tests used during the COVID pandemic, researchers say.

Lab testing provides doctors with essential information to help them diagnose and treat disease. Here’s what happens behind the scenes after you roll up your sleeve for a blood draw.

A new effort significantly reduces the number of unnecessary CT scans in children, limiting exposure to harmful radiation.

A new test needs only a blood sample to detect a novel marker of Alzheimer's disease neurodegeneration, researchers report.

"We learned that a urine test fairly early on during pregnancy has a strong statistical power for predicting preeclampsia."

If you have COVID-19 symptoms but a negative rapid test, take this expert advice to keep people around you safe.

Outreach by local groups can expand access to at-home COVID-19 testing, especially in vulnerable communities, a new study shows.

If you saw news coverage of a study suggesting limited benefit to colonoscopies, consider this message from experts.