Sputum Induction

A procedure is done by inhalation of Hypertonic Saline Solution (3% and 5% Sodium Chloride) followed by coughing and expectoration of the phlegm or secretion. This is used for patient who have difficulty in producing a phlegm or as an aid to the diagnosis of Pulmonary Tuberculosis (PTB).


  1. Fasting for 4-6 hours or nothing per oral 4-6 hours prior to the procedure.