Fig. 3From: Diagnostic value of serum versus plasma phospho-tau for Alzheimer’s diseaseHeatmap of Spearman correlation between blood and CSF biomarkers in cohort 1. The figure shows correlation of plasma and serum p-tau between themselves and with the core CSF biomarkers (Aβ42, p-tau181, total-tau) in cohort 1. The heatmap shows a color gradient of −1.0 (red; strongest inverse correlation) to 1.0 (blue; strongest positive correlation)Back to article page