Scalable liquid‑biopsy tests measuring neurodegenerative biomarkers in extracellular vesicles from blood, saliva and urine for early, pre‑symptomatic detection and differential diagnosis of Parkinson’s disease, dementia with Lewy bodies and Alzheimer’s. Assay services and IVD product development for pharma/biotech (stratification, progression monitoring, surrogate endpoints, target engagement) and for patients, clinicians and healthcare providers.