Punch Biopsies & Pencil Erasers

Scalp Punch Biopsies

bx size.png

Punch biopsies are performed when the diagnosis of a patient’s hair loss is not clear.

Patients frequently ask “how big of a piece are you going to take?” A punch biopsy for hair loss should normally be 4 mm in size - which is a bit smaller than the typical 5 mm pencil eraser. 


Dr. Jeff Donovan is a Canadian and US board certified dermatologist specializing exclusively in hair loss. To schedule a consultation, please call the Whistler office at 604.283.1887



Share This
-->