Scalp Biopsies: Always 4 mm in size
Scalp Biopsies
Scalp biopsies are performed when the diagnosis of an individual's hair loss is not clear from their story and from examination of the scalp.
A biopsy is performed under local freezing and involves removal of a tiny sample 4 mm in diameter.
The sample is sent off the the dermatopathologist for review under the microscope
This article was written by Dr. Jeff Donovan, a Canadian and US board certified dermatologist specializing exclusively in hair loss.