Guidelines for Using the QuantiFERON - Centers for Disease …
在cdc.gov上查看更多信息In 2001, the QuantiFERON®-TB test (QFT) (manufactured by Cellestis Limited, Carnegie, Victoria, Australia) was approved by the Food and Drug Administration (FDA) as an aid for detecting latent Mycobacterium tuberculosis infection (1). This test is an in vitro diagnostic aid that measures a component of cell-mediated imm…QuantiFERON TB Gold Plus - Quest Diagnostics
2021年3月2日 · For a test to be valid, the nil tube must have a value of ≤8.0 IU/mL. In the example cited above, the nil value (0.07 IU/mL) is well within the recommended range of ≤8.0 …
QuantiFERON (QFT) Interpretation - El Paso County …
Scenario 1: TB Antigen – Nil ≥ 0.35 IU/mL. If yes, move to next step of TB Antigen – Nil ≥ 25% of Nil IU/mL value; If yes, move to Nil ≤ 8.0 IU/mL; If yes, test is positive; Scenario 2: TB Antigen – Nil ≥ 0.35 IU/mL. If no, Mitogen – Nil < …
QuantiFERON-TB Gold Plus, Blood - Mayo Clinic Laboratories ...
Indeterminate results due to a low IFN-gamma level in the mitogen (positive control) tube. This may occur due to a low lymphocyte count, reduced lymphocyte activity, or inability of the …
Mycobacterium tuberculosis by QuantiFERON-TB Gold Plus, Blood ...
The mitogen control (Mitogen-Nil value) is used to assure that the patient has a healthy immune response and also serves as a control for correct blood handling and incubation. It is used to …
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Nil – Negative Control Adjusts for background IFN-γ Mitogen – Positive Control Low response may indicate inability to generate IFN-γ Figure 1. QFT-Plus Blood Collection Tubes. TB2 – …
A negative QFT result requires both antigen tubes minus Nil to be < 0.35 IU/ ml, or ≥ 0.35 and < 25% of Nil value, and the mitogen minus Nil to be ≥ 0.5 IU/ml. Some QFT results may be …
Comparative Results of QuantiFERON-TB Gold In-Tube and …
Results showing a nil value of >8.0 IU/ml or a mitogen value of <0.5 IU/ml were considered indeterminate. The same interpretation was applied to QFT-Plus, but the result was …
TB GOLD PLUS DETAILED | LABCORP OKLAHOMA INC.
The NIL tube value indicates if the patient has an ongoing immune response which can cause a false-positive result. The NIL tube must be ≤ 8.0 IU/mL. Significance of the MITOGEN result: …
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