Serum GFAP as a biomarker for progression in multiple sclerosis: assay comparison and a large reference database of healthy controls. - Willemse, Eline A.J.; Sandgren, Sofia; Benkert, Pascal; Schaedelin, Sabine; Maceski, Aleksandra Maleska; Oechtering, Johanna; Genc, Nafiye; Berger, Klaus; Hermesdorf, Marco; Müller, Stefanie; Finkener, Sebastian; Vilchez Gomez, Juan F.; et al. (Clinical Chemistry & Laboratory Medicine, 2026)