Fig. 2From: Interlaboratory proficiency processing scheme in CSF aliquoting: implementation and assessment based on biomarkers of Alzheimer’s diseaseResults of homogeneity testing for Aβ1–42 (a), pTau181 (b), and albumin (c). Individual concentrations obtained in aliquots prepared from 10 primary samples presented as filled circles; averages presented as hollow circles. Aβ amyloid betaBack to article page