Clue cells are certain cells in the vagina (vaginal epithelial cells) that appear fuzzy without sharp edges under a microscope. Clue cells change to this fuzzy look when they are coated with bacteria. If clue cells are seen, it means bacterial vaginosis is present.

Current as of: February 20, 2015

Author: Healthwise Staff

Medical Review: Kathleen Romito, MD - Family Medicine & Deborah A. Penava, BA, MD, FRCSC, MPH - Obstetrics and Gynecology