blood test

A simple blood test can detect colorectal cancer early, study finds

7:14pm March 14, 2024

by Allison Aubrey

At a time when colorectal cancer is rising, researchers say a blood test can detect 83% of people with the disease. If the FDA approves it the test would be another screening tool for early detection.

Newer blood tests can help doctors diagnose Alzheimer's disease without a brain scan or spinal tap. But some tests are more accurate than others.

Blood tests can help diagnose Alzheimer's — if they're accurate enough. Not all are

5:00am January 11, 2024

by Jon Hamilton

A new generation of blood tests can help doctors diagnose Alzheimer's without a brain scan or spinal tap. But only a few perform as well as traditional tests.

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The most common test for coronavirus infections checks for the virus' genetic material. A blood test that, instead, measures antibodies against the virus could give doctors and researchers more information.

How A Coronavirus Blood Test Could Solve Some Medical Mysteries

1:35pm February 28, 2020

by Richard Harris

Researchers in Asia are using a blood test that identifies people who have previously been exposed to the new coronavirus. In the U.S., that kind of test isn't yet available.

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A decade ago, it seemed inevitable that every newborn would get a complete gene scan. But there are technical challenges and practical concerns.

Health & Safety

The Promises And Pitfalls Of Gene Sequencing For Newborns

5:00am July 08, 2019

by Richard Harris

Traditional blood tests still do a better job flagging common inherited diseases. Gene sequencing can be useful for detecting some conditions, but the results can be difficult to interpret.

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Finding some change in the blood of an Alzheimer's patient that accurately reflects the damaging changes in the brain has been tough.

Scientists Aim For Better, Cheaper Tests For Alzheimer's

1:43pm August 04, 2017

by Shirley S. Wang

The goal is to find accurate, painless tests that can help doctors diagnose Alzheimer's early and track the progression of the illness and any response to treatment. A few tests seem promising.