The amount of a pyrroline-5-carboxylate reductase 1, mitochondrial (human) when measured in cerebrospinal fluid. The trait is Ontology of Biological Attributes entry OBA_2057658 (level of pyrroline-5-carboxylate reductase 1, mitochondrial (human) in cerebrospinal fluid). Also known as: cerebrospinal fluid pyrroline-5-carboxylate reductase 1, mitochondrial (human) amount.