Serological

**Semantic type:** Qualitative Concept

**Definition:** Pertaining to the in vitro reactions and properties of immune sera, particularly, the concept refers to the use of such reactions to measure serum titers of antibody against infectious and non-infectious agents (serologic tests), to the clinical correlations of the antibody titer, and to the use of serologic reactions to detect antigens.

**Synonyms:** - Serologic