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Figure 4 | BMC Pulmonary Medicine

Figure 4

From: Comparison of same day diagnostic tools including Gene Xpert and unstimulated IFN-γ for the evaluation of pleural tuberculosis: a prospective cohort study

Figure 4

The determination of the: a) limit of detection of Xpert MTB/RIF and b) analysis of possible inhibition of Xpert MTB/RIF internal probe in pleural fluid samples. a) To determine the limit of detection, known amounts of colony forming units of stock H37Rv were added to 1 ml aliquots of pleural fluid in duplicate for two repeat experiments. b) CT values for Xpert MTB/RIF internal probe are represented as box and whiskers (min and max) for pleural fluid, concentrated pleural fluid (20 ml pellet resuspended in 1 ml) and sputum. *: p < 0.0001 (Mann-Whitney).

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