The amount of a bifunctional peptidase and arginyl-hydroxylase JMJD5 when measured in blood serum. The trait is level of bifunctional peptidase and arginyl-hydroxylase JMJD5 in blood serum (OBA_2044597). Also known as: blood serum bifunctional peptidase and arginyl-hydroxylase JMJD5 amount.