Which lip should be folded back to expose the mucosal surface during Buccal Mucosal Bleeding Time?

Which lip should be folded back to expose the mucosal surface during Buccal Mucosal Bleeding Time?

• A. Upper lip
• B. Lower lip
• C. Cheek
• D. Gums

Answer: (A)

Buccal Mucosal Bleeding Time relies on exposing the buccal mucosa—the inner lining of the cheek—for a standardized incision and observation of how long bleeding lasts. Folding back the upper lip brings the buccal mucosa into clear view and access near the upper teeth, providing a consistent site for the test. Folding the lower lip would reveal the lower labial mucosa, not the buccal surface used in this procedure, and the gums or the cheek itself aren’t the specifically designated sites for the standardized incision. So, folding the upper lip back to expose the mucosal surface is the correct approach.

Buccal Mucosal Bleeding Time relies on exposing the buccal mucosa—the inner lining of the cheek—for a standardized incision and observation of how long bleeding lasts. Folding back the upper lip brings the buccal mucosa into clear view and access near the upper teeth, providing a consistent site for the test. Folding the lower lip would reveal the lower labial mucosa, not the buccal surface used in this procedure, and the gums or the cheek itself aren’t the specifically designated sites for the standardized incision. So, folding the upper lip back to expose the mucosal surface is the correct approach.