QuantiFERON-TB Gold Plus (QFT-Plus): Introduction, Principle, Procedure, Result Interpretation, Clinical Significance, and Keynotes
Introduction The QuantiFERON-TB Gold Plus (QFT-Plus) is a highly sensitive fourth-generation Interferon Gamma Release Assay (IGRA). It acts as an indirect, in vitro blood screening test used to identify infections caused by the Mycobacterium tuberculosis complex. This advanced laboratory assay serves as a modern alternative …