Test sample + Normal recombinant PrP + Thioflavin T (ThT) sCJD brain 1:4,000,000 sCJD nasal brushing 96-well plate Non-CJD nasal brushing Shaking fluorescence plate reader + prion seed PrP amyloid with fluorescent ThT stain Normal recombinant PrP + ThT sCJD brain 1:4,000,000 sCJD nasal brushing Non-CJD nasal brushing