Data on C2N Diagnostic LLC’s new blood test combining a proprietary p-tau217 measurement with the amyloid beta (a-beta) 42/40 ratio, a component of C2N’s commercially available PrecivityAD blood test, could help to predict people at risk for Alzheimer’s disease (AD) – even at the earliest stages.

A Seattle-based startup has secured breakthrough device designation for its blood-based Alzheimer’s disease (AD) test. Altpep Corp.’s Soba-AD platform is designed to selectively detect toxic forms of amyloid-beta peptide associated with AD progression. The company said early data indicated the assay can detect AD before symptoms including cognitive impairment and neurodegeneration arise.

The controversial approval of Biogen Inc.’s Aduhelm (aducanumab) in June sharply increased the interest in developing a quick, painless method of diagnosing Alzheimer’s disease (AD). Now, more than half a dozen blood-based diagnostic assays are in development and one is commercially available, albeit without FDA clearance.