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

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 blood test that identifies progression of osteoarthritis in the knee is more accurate than current methods.

A new technique can measure thousands of molecules from a single drop of blood. The blood can even be collected at home.

Multicancer early detection tests are among the priorities of the Biden administration’s Cancer Moonshot. The tests show promise, but questions remain about when and how to use them.

Free range DNA fragments from a simple blood draw may be signs of higher risk of frailty and dementia, a new study shows.

A new blood test could complement standard methods for lung cancer screening without the need for biopsy, researchers report.

Your blood can hold a record of past illnesses. That information can reveal how many people have had a certain infection – like 58% of Americans having had COVID-19 by the end of February 2022.

Three of four blood tests used to identify people in early stage Alzheimer’s perform differently in Black people, putting them at risk for misdiagnosis.

A simple blood test and a smartwatch worn before and after hip replacement surgery can help predict when patients will get back on their feet.