A compound attribute that is the ratio of amount of peptidyl-prolyl cis-trans isomerase FKBP1B (human) in blood to amount of transforming growth factor beta-1 (human) in blood. The trait is FKBP1B/TGFB1 protein level ratio in blood (OBA_2055412). Also known as: the ratio of amount of peptidyl-prolyl cis-trans isomerase FKBP1B (human) in blood to amount of transforming growth factor beta-1 (human) in blood.