The amount of a leukocyte immunoglobulin-like receptor subfamily A member 6 when measured in blood serum. The trait is Ontology of Biological Attributes term OBA_2042198 (level of leukocyte immunoglobulin-like receptor subfamily A member 6 in blood serum). Also known as: blood serum leukocyte immunoglobulin-like receptor subfamily A member 6 amount.