A child presents with fever and Lymphadenopathy. On examination a grey membrane can be seen over Left tonsil. Which of the following media is used for definitive diagnosis of organism?: (A) Loffler's serum slope, (B) Potassium tellurite agar, (C) Chocolate agar, (D) Tinsdale agar
Answer is B. For early diagnosis of C.diphtheria - Loffler's serum slope
For defenitive diagnosis - Potassium tellurite agar.