This test, along with bronchophony and egophony, is used to assess for consolidation in the lung.

Performing the Test

  1. Ask the patient to whisper "ninety-nine" out loud and at subdued volume
  2. Listen to the posterior lung fields with the the diaphragm of the stethoscope, noting any asymmetry in the transmission of sound

In normal lungs, the transmitted whisper will be faint if heard at all. If whispered pectoriloquy is positive, the whisper will be notably louder and clearer and may indicate consolidation.


  1. Bickley LS. The thorax and lungs. In: Bickley LS, Szilagyi PG. Bates' Guide to Physical Examination and History Taking. 10th ed. Philadelphia, PA: Lippincott Williams & Wilkins; 2009:283-321.