ICA1/IRAK1 protein level ratio in blood (Ontology of Biological Attributes id OBA_2052977) can be described as follows. A compound attribute that is the ratio of amount of islet cell autoantigen 1 (human) in blood to amount of interleukin-1 receptor-associated kinase 1 (human) in blood. Also known as: the ratio of amount of islet cell autoantigen 1 (human) in blood to amount of interleukin-1 receptor-associated kinase 1 (human) in blood.