The amount of a bifunctional arginine demethylase and lysyl-hydroxylase JMJD6 when measured in blood serum. The trait is Ontology of Biological Attributes term OBA_2042072 (level of bifunctional arginine demethylase and lysyl-hydroxylase JMJD6 in blood serum). Also known as: blood serum bifunctional arginine demethylase and lysyl-hydroxylase JMJD6 amount.