Alamar Biosciences Launches NULISAqpcr™ BD-pTau217 Assay: A Breakthrough in Non-Invasive, Brain-Specific Biomarker Detection for Alzheimer's Disease Research

New Blood-Based Assay Delivers Unparalleled Sensitivity and Specificity to enable the next generation of assay development.

FREMONT, Calif., Oct. 9, 2025 /PRNewswire/ -- Alamar Biosciences, a company powering precision proteomics to enable the earliest detection of disease, today announced the launch of the NULISAqpcr™ BD-pTau217 Assay— a transformative leap in blood-based quantification of brain-derived phosphorylated tau 217 (pTau217)—a pivotal biomarker in Alzheimer's disease research and other tauopathies. This first-of-its-kind assay is the only brain-derived single-plex solution available, setting a new benchmark for precision and CNS specificity in neurodegenerative disease research.

Built on Alamar's proprietary NULISA™ platform, the NULISAqpcr BD-pTau217 Assay delivers unprecedented sensitivity and specificity from non-invasive sample types such as plasma, serum and dried blood spots. The research assay's direct measurement of CNS-derived pTau217 without the need for cerebrospinal fluid (CSF) collection or PET imaging removes existing barriers to widespread adoption in population-based studies or longitudinal clinical trials.