" /> Gamma interferon.negative control spot count:Num:Pt:Bld:Qn: - CISMeF





Preferred Label : Gamma interferon.negative control spot count:Num:Pt:Bld:Qn:;

LOINC status : ACTIVE;

LOINC display name : Gamma interferon negative control spot count (Bld) [#];

LOINC long common name : Gamma interferon negative control spot count [#] in Blood;

LOINC short name : IGNF neg cntrl Bld;

LOINC description : The count of negative control spots (0 to 20) in a patient's T cells incubated without M. tuberculosis antigens (ESAT-6, CFP10). This term is created for, but not limited in use to, Oxford Immunotec's T-SPOT.TB assay, used to diagnose M. tuberculosis. T-SPOT.TB assay uses enzyme-linked immunospot (ELISPOT) methodology to enumerate M. tuberculosis-sensitized T cells by capturing interferon-gamma (IFN-y) in the vicinity of T cells in the patient's whole blood. In the T-SPOT.TB test, a typical result is expected to have few to no spots in the negative (nil) control and 20 or more spots in the positive control (Mitogen stimulated). A negative control spot count of 10 is considered invalid.;

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28/05/2025


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