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IN.gov
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Interpretation of QFT-Plus test results Nil (IU/ml) TB1 minus Nil TB2 ...
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Mitogen minus Nil (IU/ml) QFT -Plus Result Re sult interpretation ≤8.0 ≥0.35 and ≥25% of Nil Any Any Positive M. tuberculosis infection likely Any ≥0.35 and ≥ 25% of Nil <0.35 or ≥0.35 and <25% of Nil <0.35 or …

Mitogen minus Nil (IU/ml) QFT -Plus Result Re sult interpretation ≤8.0 ≥0.35 and ≥25% of Nil Any Any Positive M. tuberculosis infection likely Any ≥0.35 and ≥ 25% of Nil <0.35 or ≥0.35 and <25% of Nil <0.35 or ≥0.35 and <25% of Nil ...
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CDC
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Guidelines for Using the QuantiFERON - Centers for Disease …
Introduction
QFT Performance, Interpretation, and Use
Recommendations
Contraindications
Conclusions
References
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…
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Quest Diagnostics
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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 …
El Paso County Public Health
https://www.elpasocountyhealth.or…翻译此结果
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 < …
Mayo Clinic Laboratories
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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 …
testcatalog.org
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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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What does mitogen nil mean?
Mitogen - Nil 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 detect false negative readings. The Mitogen-Nil value must be > 0.5 IU/mL.
Mycobacterium tuberculosis by QuantiFERON-TB Gold Plus, Blood
christianacare.testcatalog.org
What is igen tube minus nil?
igen tube minus Nil is ≥ 0.35 IU/ml and ≥ 25% of the Nil value. A negative QFT result requires both antigen tubes minus Nil to be < 0.35 IU/ ml, or ≥ 0.35 an < 25% of Nil value, and the mitogen minus Nil to be ≥ 0.5 IU/ml.Some QFT results may be indeterminate due to processi g errors or the patient’s inability to respond to either c
CHAPTER 2: DIAGNOSIS AND TREATMENT OF LATENT TUBERCULOSIS I…
nyc.gov
What is a mitogen tube used for?
The mitogen tube is also used to detect false-negative readings. For a test to be valid, the mitogen tube must have an IFN-γ value at least 0.5 IU/mL higher than the value of the nil tube. This indicates that the test is functioning properly.
QuantiFERON ® -TB Gold Plus - Quest Diagnostics
questdiagnostics.com
What does nil mean on a blood test?
The nil value comes from the negative control tube, which contains no additives; it is used to determine if the patient has a preexisting immune response (eg, heterophile antibody effects or non-specific IFN-γ production), which could cause a false-positive reading on the test. For a test to be valid, the nil tube must have a value of ≤8.0 IU/mL.
QuantiFERON ® -TB Gold Plus - Quest Diagnostics
questdiagnostics.com
How do you determine if a mitogen control is positive or negative?
positive (Mitogen) control, and negative (Nil) control spot counts. Results are interpreted by subtracting the spot ount in the Nil control from the spot count in Panel A and Panel B. For a valid test, the Nil control has ≤ 10 spots; if Panel A or B minus Nil has ≤ 4 spo s, then the Mitogen must also have ≥ 20 spots for a valid
CHAPTER 2: DIAGNOSIS AND TREATMENT OF LATENT TUBERCULOSIS I…
nyc.gov
What is a valid nil test?
Inorder for the test to be valid, the Nil tube must have a value of < 8.0 IU/mL. Mitogen - Nil 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 detect false negative readings.
Mycobacterium tuberculosis by QuantiFERON-TB Gold Plus, Blood
christianacare.testcatalog.org
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QuantiFERON
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Detect TB infection with confidence - QuantiFERON
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 – …
NYC.gov
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CHAPTER 2: DIAGNOSIS AND TREATMENT OF LATENT …
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 …
nih.gov
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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 …
Labcorp Oklahoma, Inc.
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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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