The dermatologist may decide to perform a bacterial culture and sensitivity test when:
It is always advisable to perform a culture examination for dermatophytes:
It depends on the sampling method.
The animal must not be washed or treated with drugs or local antiseptics at the lesions to be sampled and any ongoing antibiotic treatment must have been discontinued for at least 10 days.
If general anaesthesia is to be used, preoperative blood tests are needed. In this case the animal must have been fasting for 12 hours from food.