Clinical factors increasing index of suspicion for tuberculosis Clinical factors increasing index of suspicion for tuberculosis. Increasing probability of TB warrants further investigation, especially collection of respiratory samples for mycobacterial stain and culture. For hospitalized patients, or those in congregate living settings, increasing suspicion warrants prompt isolation pending results of investigations. (Used with permission of Richard Long, unpublished observations). Source: Tuberculosis, Fishman's Pulmonary Diseases and Disorders, 5e Citation: Grippi MA, Elias JA, Fishman JA, Kotloff RM, Pack AI, Senior RM, Siegel MD. Fishman's Pulmonary Diseases and Disorders, 5e; 2015 Available at: http://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/books/1344/p9780071796729-ch131_f011.png&sec=111843291&BookID=1344&ChapterSecID=81199723&imagename= Accessed: October 29, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved