Tau in the Blood (IMAGE) Washington University School of Medicine Caption Tangles of the brain protein tau are associated with neurological diseases such as Alzheimer's. A new study shows that antibodies can capture tau in the blood, facilitating efforts to measure levels of the damaging protein and paving the way toward a noninvasive test for tau. Credit Sara Moser Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.