Test Finds Protein Linked to Alzheimer’s

A new test shows when people have a protein linked to Alzheimer’s disease in their brains, researchers say. The protein is called beta-amyloid. The current test is to look for it in a brain autopsy after death. The new test uses a chemical called florbetapir. It binds to beta-amyloid in the brain. This allows the protein to show up on a PET scan. Researchers gave the test to 29 elderly people thought to be near the end of their lives. After they died, autopsies were done. The new test found that 15 of the 29 had Alzheimer’s. The test and autopsy results agreed for 28 out of 29 people. Researchers also gave the test to 74 younger adults. As expected, it showed no beta-amyloid in their brains. Avid Radiopharmaceuticals is seeking approval to market the test. A group of experts was scheduled to evaluate the test January 20. They will advise U.S.