FIGURE 1.

Correlations between amyloid plasma markers and CSF markers. A, Pearson correlation between the 4‐plex and IPMS Aβ_{1‐42/1‐40} ratio. B, Pearson correlation between the 4‐plex Aβ_{1‐42/1‐40} ratio and CSF Aβ_{1‐ 42}. C, Pearson correlation between the IPMS Aβ_{1‐42/1‐40} ratio and CSF Aβ_{1‐ 42.} Shape indicates clinical diagnosis, color indicates CSF amyloid status. Aβ, amyloid beta; AD, Alzheimer's disease; CSF, cerebrospinal fluid; DLB, dementia with Lewy bodies; FTD, frontotemporal dementia; IPMS, immunoprecipitation mass spectrometry