GAL/PM20D1 protein level ratio in blood (OBA_2053692) can be described as follows. A compound attribute that is the ratio of amount of galanin peptides (human) in blood to amount of N-fatty-acyl-amino acid synthase/hydrolase PM20D1 (human) in blood. Also known as: the ratio of amount of galanin peptides (human) in blood to amount of N-fatty-acyl-amino acid synthase/hydrolase PM20D1 (human) in blood.