# serology

> English word · Noun

## Definitions
1. The science that studies the blood serum, and especially the reaction between antigens and antibodies in serum.
2. The characteristics of the blood serum in a particular disease or organism.
3. A serologic test: a blood test to detect the presence of, and often to measure the amount of, various components of the serum (usually antibodies, antigens, and immune complexes thereof).

## Etymology
From sero- + -logy.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/serology