The amount of a NF-kappa-B inhibitor-interacting Ras-like protein 2 when measured in blood serum. The trait is Ontology of Biological Attributes id OBA_2042587 (level of NF-kappa-B inhibitor-interacting Ras-like protein 2 in blood serum). Also known as: blood serum NF-kappa-B inhibitor-interacting Ras-like protein 2 amount.