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. 2009 Jan 19;4(1):e4220. doi: 10.1371/journal.pone.0004220

Figure 3. Influence of CD4 cell count on performance of the QuantiFERON-TB® Gold In-tube test in HIV-positive patients.

Figure 3

For HIV-positive patients the % of indeterminate and positive test responders respectively was grouped by the individual number of CD4 cells/µl. P-values are for Cochrane-Armitage test for trend. A similar relationship was not found in HIV-negative patients. The number of patients in each CD4 cell group was: 0–99: 5, 100–199: 17, 200–299: 20, 300–399∶6, 400–499∶6, >500∶14. QFT-IT: QuantiFERON-TB® Gold In-tube test.