The amount of a T-cell immunoglobulin and mucin domain-containing protein 4 (human) when measured in blood. The trait is Ontology of Biological Attributes identifier OBA_2052797 (amount of T-cell immunoglobulin and mucin domain-containing protein 4 (human) in blood). Also known as: blood T-cell immunoglobulin and mucin domain-containing protein 4 (human) amount.