Mitogen-NiL details
What Mitogen-NiL shows
The QuantiFERON®-TB Gold Plus test measures interferon-gamma released by your immune cells in separate blood tubes. The mitogen tube contains a substance that stimulates almost anyone's immune cells, and the nil tube contains nothing, showing background levels. Mitogen-Nil is calculated by subtracting the nil value from the mitogen value. It is a positive control: a good response shows your cells were able to react, so a negative TB result is meaningful. A low mitogen response can make the overall result indeterminate, which may happen with a weakened immune system, some medications or sample handling problems. It does not show TB infection itself.
Tests that include Mitogen-NiL
QuantiFERON-TB Gold Plus is an indirect test for M. tuberculosis infection. It is intended to be used in conjunction with risk assessment, radiography, and other medical and diagnostic evaluations.
- Mitogen-NiL A control value in the QuantiFERON-TB Gold Plus test showing that your immune cells can respond normally, so the TB result can be trusted.
- QuantiFERON Nil Control A baseline (no-stimulation) control value used in specialized immune function tests, such as TB or allergy blood testing, to interpret the other results correctly.
- QuantiFERON-TB Gold Plus, 1 Tube A blood test that checks whether your immune system has been exposed to tuberculosis, as an alternative to the traditional skin (PPD) test.
- QuantiFERON TB1 Antigen Minus Nil The TB1 antigen tube result minus the nil (background) tube in the QuantiFERON-TB Gold Plus test, reflecting a T-cell response to tuberculosis proteins.
- QuantiFERON TB2 Antigen Minus Nil The TB2 antigen tube result minus the nil (background) tube in the QuantiFERON-TB Gold Plus test, reflecting CD4 and CD8 T-cell responses to tuberculosis.
QuantiFERON-TB Gold Plus is an indirect test for M. tuberculosis infection. It is intended to be used in conjunction with risk assessment, radiography, and other medical and diagnostic evaluations.
- Mitogen-NiL A control value in the QuantiFERON-TB Gold Plus test showing that your immune cells can respond normally, so the TB result can be trusted.
- QuantiFERON Nil Control A baseline (no-stimulation) control value used in specialized immune function tests, such as TB or allergy blood testing, to interpret the other results correctly.
- QuantiFERON-TB Gold Plus, 1 Tube A blood test that checks whether your immune system has been exposed to tuberculosis, as an alternative to the traditional skin (PPD) test.
- QuantiFERON TB1 Antigen Minus Nil The TB1 antigen tube result minus the nil (background) tube in the QuantiFERON-TB Gold Plus test, reflecting a T-cell response to tuberculosis proteins.
- QuantiFERON TB2 Antigen Minus Nil The TB2 antigen tube result minus the nil (background) tube in the QuantiFERON-TB Gold Plus test, reflecting CD4 and CD8 T-cell responses to tuberculosis.
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