Diphtheria and Tetanus Antitoxoids tests are used to evaluate diphtheria immunization response. Tetanus is caused by Clostridium tetani. Immunization with Tetanus Antitoxoid is effective However, tetanus can still occur in some individuals with such antibody levels.
Infectious Diseases, Clostridium tetani (Tetanus), Corynebacterium diphtheriae
This test does not check active disease but immunity following vaccination.