The tests screen for cancers that often go undetected, but they are expensive and some experts worry they could lead to unnecessary treatments without saving patients’ lives. By Gina Kolata Jim ...

A blood test under study may soon be able to help many patients with colon cancer decide whether they need chemotherapy after surgery, or if they can safely skip it.. The results, which ...

A T4 blood test is used to check your thyroid function. It stands for thyroxine, which is a hormone made by the hormone glands. Learn about how the test works today.

The blood test detected the majority of cancers in people with four of the biggest cancer killers: breast, colon, lung and ovarian cancer, the team at Johns Hopkins University said.

Testing a person’s blood for a type of protein called phosphorylated tau, or p-tau, could be used to screen for Alzheimer’s disease with “high accuracy,” even before symptoms begin to show ...

Scientists from Oregon Health & Science University have developed a blood test called PAC-MANN that is said to be less invasive, cheaper and more robust than traditional screening methods for ...

Now that there are drugs to treat Alzheimer's, blood tests to detect it will likely become an attractive, low-cost option to decide who can get treatment. Some tests are more accurate than others.

A blood test could offer some insight The newly developed test focuses on the part of the immune system that confers long-term protection by prompting the body to “remember” the virus.

A simple blood test could predict if a patient will develop Alzheimer’s disease up to 16 years before symptoms begin, a new study finds. By measuring changes in the levels of a protein in the ...

For decades, researchers have sought a blood test for beta amyloid, the protein that is a hallmark of Alzheimer’s disease. Several groups and companies have made progress, and on Thursday ...

The Food and Drug Administration has approved a blood test that can identify pregnant women at severe risk for preeclampsia, a high blood pressure disorder that can develop during pregnancy.