level of serine protease inhibitor Kazal-type 1 (human) in cerebrospinal fluid (OBA_2056608, an Ontology of Biological Attributes term) is the amount of a serine protease inhibitor Kazal-type 1 (human) when measured in cerebrospinal fluid. Also known as: cerebrospinal fluid serine protease inhibitor Kazal-type 1 (human) amount.