Background QuantiFERON Gold Plus (Plus) assay has two approved methods for blood
collection: direct in-tube (Plus direct) or the transfer of blood from a lithium heparin tube …

ABSTRACT Both the QuantiFERON-TB Gold Plus (QFT-Plus) and the QuantiFERON-TB
Gold In-Tube (QFT-GIT) tests are interferon gamma (IFN-γ) release assays (IGRAs) intended …

ABSTRACT The QuantiFERON-TB Gold Plus (QFT-Plus; Qiagen, Germantown, MD)
interferon gamma release assay (IGRA) received FDA clearance in 2017 and will replace …

The QuantiFERON-TB Gold Plus assay (QFT; Qiagen, Hilden, Germany) is a frequently used
interferon gamma releasing assay (IGRA) for the diagnosis of latent tuberculosis infections …

Rationale: North American occupational health programs that switched from the tuberculin
skin test (TST) to IFN-γ release assays for latent tuberculosis screening are reporting …

Gamma interferon (IFN-γ) release assays (IGRAs) are functional assays used serially to
measure the efficacy of novel tuberculosis (TB) vaccines and to screen health care workers …

SETTING: The QuantiFERON®-TB Gold (QFT) assay is an interferon-gamma release assay
used for the clinical diagnosis of latent tuberculous infection. Relatively high rates of …

Methods We enrolled eligible healthcare workers who participated in an annual tuberculosis
(TB) screening at Houston Methodist Hospital, Houston, Texas. Participants were eligible if …

Background The QuantiFERON®-TB Gold In-Tube test (QFT-GIT) detects Mycobacterium
tuberculosis (Mtb) infection by measuring release of interferon gamma (IFN-γ) when T-cells …

Abstract Purpose QuantiFERON-TB Gold Plus (QFT-Plus) is a new generation of
QuantiFERON assay that differs from QuantiFERON-TB Gold In-Tube test (QFT-GIT). The …