Fig. 1From: Alzheimer’s disease biomarkers in cerebrospinal fluid are stable with the Elecsys immunoassay to most pre-analytical influencing factors except freezing at -80 °CNo influence of blood contamination (20,000 erythrocytes/µl CSF) on Alzheimer´s disease cerebrospinal fluid (CSF) biomarker concentrationsCSF = cerebrospinal fluid, A): Aß42 = Amyloid beta 1–42, B): P-tau = Phospho-Tau (181P), C): T-tau = Total-Tau, D): P-tau/Aß42 concentrations quotient, E): T-tau/Aß42 concentrations quotientBack to article page