The amount of a leukocyte immunoglobulin-like receptor subfamily A member 2 when measured in blood serum. The trait is Ontology of Biological Attributes id OBA_2042195 (level of leukocyte immunoglobulin-like receptor subfamily A member 2 in blood serum). Also known as: blood serum leukocyte immunoglobulin-like receptor subfamily A member 2 amount.