BIOMARKAPD is a multi-national research project comprising 51 sites in 21 countries, including Ireland. This JPND (Joint Programme on Neurodegenerative Diseases) funded collaborative research project aims to develop optimally informative biomarkers for AD and PD and the harmonisation of their use. The Irish strand of BIOMARKPD aims to; standardise biomarker measurement and interpretation nationally; develop and make available a CSF test for ND biomarkers in AD and PD; Establish and sustain a registry of ND; and bring clarity to biomarker interpretation to support diagnosis.