Version 2.78

Term 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.
Source: Regenstrief LOINC

Fully-Specified Name

Component
Gamma interferon.negative control spot count
Property
Num
Time
Pt
System
Bld
Scale
Qn
Method

Additional Names

Short Name
IGNF neg cntrl Bld
Display Name
Gamma interferon negative control spot count (Bld) [#]
Consumer Name Alpha Get Info
Gamma interferon negative control spot count, Blood

Basic Attributes

Class
MICRO
Type
Laboratory
First Released
Version 2.46
Last Updated
Version 2.46
Order vs. Observation
Both

Member of these Panels

LOINC Long Common Name
74281-7 Mycobacterium tuberculosis stimulated gamma interferon and spot count panel - Blood
99771-8 SARS coronavirus 2 spike and nucleocapsid protein stimulated gamma interferon panel - Blood

Language Variants Get Info

Tag Language Translation
es-ES Spanish (Spain) Interferón gamma control negativo de recuento de manchas:Número (recuento):Punto temporal:Sangre:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Recuento de puntos de control negativo de interferón gamma:Número (recuento):Punto temporal:Sangre:Cuantitativo:
fr-FR French (France) Interféron gamma spots contrôle négatif comptés:Nombre:Ponctuel:Sang:Numérique:
it-IT Italian (Italy) Interferone gamma.controllo negativo numero di spot:Num:Pt:Sangue:Qn:
Synonyms: Microbiologia Numero (conta) Punto nel tempo (episodio) Sangue
nl-NL Dutch (Netherlands) gamma-interferon.negatieve controle spot telling:aantal:moment:bloed:kwantitatief:
pt-BR Portuguese (Brazil) Gama interferon controle negativo contagem de ponto::Pt:SgTotal:Qn:
ru-RU Russian (Russian Federation) Гамма интерферон.негативный контроль пятно количество:Кол:ТчкВрм:Кр:Колич:
Synonyms: Количественный Количество Кровь Точка во времени;Момент
tr-TR Turkish (Turkey) Gamma interferon.negatif kontrol spot sayım:Say:Zmlı:Kan:Kant:
zh-CN Chinese (China) Gamma 干扰素.阴性对照斑点计数:数量(计数):时间点:全血:定量型:
Synonyms: Gamma 干扰素（γ干扰素、IFN-γ）.阴性对照（控制） Gamma 干扰素（γ干扰素、IFN-γ）.阴性对照（控制）斑点（斑、点）计数 IFN Neg 不存在的 个数;数量;数量或计数（非负整数）;计数 反面的 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 否定的 否认的 微生物学;微生物学试验;微生物学试验（培养、DNA、抗原及抗体） 时刻;随机;随意;瞬间 消极的 血;血液 负性的 负的 负面的 阴 阴性（Negative，Neg）

Example Units

Unit Source
{#} Example UCUM Units

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=74279-1