The amount of a a disintegrin and metalloproteinase with thrombospondin motifs 3 (human) when measured in cerebrospinal fluid. The trait is level of a disintegrin and metalloproteinase with thrombospondin motifs 3 (human) in cerebrospinal fluid (Ontology of Biological Attributes term OBA_2056052). Also known as: cerebrospinal fluid a disintegrin and metalloproteinase with thrombospondin motifs 3 (human) amount.