Investigation of false-positive results by the QuantiFERON-TB Gold In-Tube assay
Journal of Clinical Microbiology, 07/16/2012
Slater M et al. – Direct comparison of the TB Antigen tubes with tubes from a different lot number identified that a potential problem with the TB Antigen vials in a certain tube lot was the likely cause of the elevated positive rate. The underlying defect remains unknown. This finding warrants refinement of quality control programs by the manufacturer and users.