CSF Kappa Free Light Chain: An enhancement to Oligoclonal Bands? A Tertiary Centre Cohort. Armfield N A E, Hanton S, Williams N, Birch K, Tate R, Jackson E, Chadwick C Ann Clin Biochem. 2026 Sep 15:45632261492540. PMID: 42742345. Abstract CommentRecommendBookmarkWatch