The amount of a peptidyl-prolyl cis-trans isomerase FKBP1B when measured in blood serum. The trait is Ontology of Biological Attributes id OBA_2041588 (level of peptidyl-prolyl cis-trans isomerase FKBP1B in blood serum). Also known as: blood serum peptidyl-prolyl cis-trans isomerase FKBP1B amount.