Gum biopsy is a diagnostic procedure in which a small piece of gingival (gum) tissue is removed for examination. The test is performed when examination of the mouth reveals abnormal-appearing gum tissue.
Review Date 2/27/2019
Updated by: Josef Shargorodsky, MD, MPH, Johns Hopkins University School of Medicine, Baltimore, MD. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.