WHAT IS SCHICK TEST FOR DIPHTHERIA TEST?
The Schick test is an intracutaneous skin test to determine the immunity strain for diphtheria by detecting the presence of antitoxins in the blood to this respiratory disease. One performs the test by injecting of the minimum lethal dose of diphtheria toxin and then observing the site for a reaction, which would indicate a lack of diphtheria immunity. A negative response indicates the presence of diphtheria antitoxin in the client’s bloodstream. Immunity to diphtheria wanes over time; therefore, a childhood vaccination does not guarantee immunity in adulthood.