Elek’s test is an immunodiffusion test which helps to detect the toxigenecity of diphtheria. A filter paper strip containing diphtheria antitoxin is placed on a solid culture medium. Then, bacteria are streaked through the right angle to the filter paper. If the bacteria are toxigenic, a line of antigen and antibody precipitate will form.

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Chapter 18, Problem 6MCQ

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Elek’s test is an immunodiffusion test which helps to detect the toxigenecity of diphtheria. A filter paper strip containing diphtheria antitoxin is placed on a solid culture medium. Then, bacteria are streaked through the right angle to the filter paper. If the bacteria are toxigenic, a line of antigen and antibody precipitate will form.

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