Biomarkers & Diagnostics
Plain-language explanations of blood tests, PET scans, lumbar punctures, and other tools changing how we detect and understand brain disease.
The Alzheimer's Blood Test Was Negative. Now What?
A negative Alzheimer's blood test doesn't mean the cognitive changes aren't real. Here's what clinicians look for next — from Lewy body disease and FTD to vascular cognitive impairment and the biomarkers that are just now becoming available.
Thinking About an Alzheimer’s Blood Test? Here’s What You Should Know First
Blood tests for Alzheimer’s disease have moved from research into clinical practice faster than many realize. Here’s what these tests actually measure, who should consider them, and why a result is only one part of a complete evaluation.
How PET Scans Changed Our Understanding of Alzheimer's Disease
PET scans can reveal amyloid plaques, tau tangles, and metabolic changes in the brain. Here's what they contribute to a dementia workup — and where they fit in the bigger picture.