Multiple choice Which among the following tests is done for diagnosing diphtheria? Lepromin test Shick test Widal test Tuberculin test Reveal answer Fill a bubble to check yourself B Correct answer Explanation The Schick test (misspelled as Shick) is used to diagnose diphtheria immunity by introducing diphtheria toxin intradermally. Widal test is for typhoid, Tuberculin for TB.