OBA_2053067 (HPCAL1/MPIG6B protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of hippocalcin-like protein 1 (human) in blood to amount of megakaryocyte and platelet inhibitory receptor G6b (human) in blood. Also known as: the ratio of amount of hippocalcin-like protein 1 (human) in blood to amount of megakaryocyte and platelet inhibitory receptor G6b (human) in blood.