https://protearc.com/brief.htmlNews from the protein-testing field, in plain language.en https://protearc.com/brief/blood-proteins-and-cell-ageing.htmlhttps://protearc.com/brief/blood-proteins-and-cell-ageing.htmlFri, 06 Nov 2026 00:00:00 +0000ScienceA study of 60,542 people used thousands of blood proteins to estimate the age of more than 40 cell types, and found that people age unevenly, cell by cell. https://protearc.com/brief/p-tau217-and-memory-years-later.htmlhttps://protearc.com/brief/p-tau217-and-memory-years-later.htmlFri, 06 Nov 2026 00:00:00 +0000ScienceIn 2,684 older adults with no memory problems, higher blood p-tau217 went with a higher chance of memory problems in the years that followed. https://protearc.com/brief/two-more-blood-tests-cleared.htmlhttps://protearc.com/brief/two-more-blood-tests-cleared.htmlFri, 06 Nov 2026 00:00:00 +0000TestingIn one week of August 2026 the FDA gave clearance to two more blood tests, made by other companies, that look for amyloid, bringing the total to four. Both are for people who already have memory symptoms.