Dick test

Dick test, method of determining susceptibility to scarlet fever by injection into the skin of 0.1 cubic cm of scarlet fever toxin. A reddening of the skin in an area over 10 mm (0.4 inch) in diameter within about 24 hours indicates a lack of immunity to the disease. The test was developed in 1924 by American physicians George Dick and Gladys Dick.

The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by Kara Rogers.
Citation Information
Article Title: Dick test
Website Name: Encyclopaedia Britannica
Publisher: Encyclopaedia Britannica, Inc.
Date Published: 08 August 2022
Access Date: February 22, 2025