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?
Loffler's serum slope
Potassium tellurite agar
Chocolate agar
Tinsdale agar
For early diagnosis of C.diphtheria - Loffler's serum slope
For defenitive diagnosis - Potassium tellurite agar.