A compound attribute that is the ratio of amount of 5-hydroxymethyl-dUMP N-hydrolase (human) in blood to amount of phospholysine phosphohistidine inorganic pyrophosphate phosphatase (human) in blood. The trait is Ontology of Biological Attributes id OBA_2053609 (DNPH1/LHPP protein level ratio in blood). Also known as: the ratio of amount of 5-hydroxymethyl-dUMP N-hydrolase (human) in blood to amount of phospholysine phosphohistidine inorganic pyrophosphate phosphatase (human) in blood.