Variation in interferon-γ production between QFT-Plus and QFT-GIT assays in TB contact investigation

ConclusionsQFT-Plus revealed significantly higher positivity rate compared with QFT-GIT, which might be attributed to increased IFN-γ production. The cut-off in both QFT-Plus and QFT-GIT was 0.35 IU/mL. These effects might resulted in the higher positivity rate in QFT-Plus.
Source: Respiratory Investigation - Category: Respiratory Medicine Source Type: research