How to do a punch biopsy

Skin biopsy is one of the most important diagnostic tests for skin disorders. Punch biopsy is considered the primary technique for obtaining diagnostic full-thickness skin specimens.

   A patient who is referred to our ENT clinic is expected to have both a punch biopsy done as well as a photo. This 5 minute procedure will save the patient a trip to Hospital as well as allowing us to fast track a patient with a malignancy such as a squamous cell carcinoma. We appreciate there is a cost involved but it will provide in most cases an accurate diagnosis which will help both the patient and the specialist staff at the hospital.


You need
Local anaesthetic with adrenaline, ideally with a dental syringe and needle which is very quick and easy to use.
A punch. 2mm in most cases is sufficient, although you can use a 3mm. They cost about 8.00NZ$.
A small pair of fine forceps and iris scissors
An alcohol swab and a couple of gauze swabs.
Send specimen in formalin to the laboratory


I have not had problems with people on anticoagulants as the bleeding is minimal.


Below is a video of how to do it. (the patient has given permission to show this video)