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(Chest. 1950;18:352-362.)
© 1950 American College of Chest Physicians

The Efficiency of Different Laboratory Examinations in the Diagnosis of Pulmonary Tuberculosis

DAIKICHI HATA JR. ; HOMER D. VENTERS JR. ; and MARTIN M. CUMMINGS M.D.1

1 Medical Research Laboratories, Lawson Veterans Administration Hospital, Chamblee, Georgia, and Department of Medicine, Emory University School of Medicine, Atlanta, Georgia.

1) One hundred and seven patients with signs or symptoms of pulmonary disease were studied by attempting to cultivate tubercle bacilli from sputum, gastric washings, laryngeal swabs and urine.

2) Of the gastric specimens 43.9 per cent were found positive by culture, as compared with 37.7 per cent of sputa, 16.9 per cent of laryngeal swabs and 2.3 per cent of urine specimens.

3) Concentration of the sputum specimens increased the number of positives by only 2 per cent.

4) Cultures of sputum were positive in 20 per cent of cases in which smear examinations of sputum were negative.






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