" /> Mitogen stimulated gamma interferon.positive control spot count:Num:Pt:Bld:Qn: - CISMeF





Preferred Label : Mitogen stimulated gamma interferon.positive control spot count:Num:Pt:Bld:Qn:;

LOINC status : ACTIVE;

LOINC display name : Mitogen stimulated gamma interferon positive control spot count (Bld) [#];

LOINC long common name : Mitogen stimulated gamma interferon positive control spot count [#] in Blood;

LOINC short name : Mitogen IGNF.spot count Bld;

LOINC description : The count of mitogen-stimulated (e.g. phytohemagglutinin, PHA) spots (0 to 50) in a patient's T cells which serves as serves as an IFN-gamma positive control and indicates cell functionality. 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 test, the positive control spot count should be greater than or equal to 20 or show saturation (too many spots to count). When the spot count is 20, the result should be considered invalid unless Panel A (ESAT-6) or Panel B (CFP10) are positive or borderline.;

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07/05/2025


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