Gamma interferon background [Units/volume] in Blood by Immunoassay   71776-9

LOINC Code


LOINC code71776-9
nameGamma interferon background [Units/volume] in Blood by Immunoassay
descriptionThis represents the baseline value for interferon-gamma release assays (IGRA). Elevated levels of IFN-gamma in the background ("Nil") sample may occur with the presence of heterophile antibodies, or to intrinsic IFN-gamma secretion.
statusACTIVE

Fully-Specified Name

componentGamma interferon background
propertyACnc  =  Arbitrary Concentration
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemBld  =  Whole blood
scaleQn  =  Quantitative:  The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256
methodIA  =  Immunoassay:  Encompasses all immunoassays with a few exceptions, including Immune Blot and Immune Fluorescence, which were created based on historic usage.

Additional Names

short nameGamma interferon background Bld IA-aCnc

Basic Attributes

classMICRO
type1  Laboratory
order vs. observationObservation
example UCUM units[IU]/mL
The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org)
example unitIU/mL

Associated Observations

LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations.

Member of these Panels

71775-1Mycobacterium tuberculosis stimulated gamma interferon panel - Blood

History/Usage

test rank596 of 2000 most commonly performed tests by labs in USA
first released
last updated2.73
last change typeMIN  - change to field other than name
change reasonRelease 2.69: DefinitionDescription: Removed reference to QuantiFERON-TB assay from the description because this term is not specific for that assay.; Previous Releases: The EIA method, which was always intended to cover more than just enzyme-linked immunoassay and whose display name for the long common name has always been Immunoassay, was renamed IA in order to eliminate ambiguity about whether the method has a broader meaning than just enzyme-linked immunoassay. Likewise, EIA.rapid was renamed IA.rapid. These changes were approved by the Laboratory LOINC Committee in June 2016.

Related Names

Arbitrary concentration
Blood
EIA
ELFA
ELISA
Enzyme immunoassay
IAA
ID
IFN
Infectious Disease
InfectiousDisease
Lung
MEIA
Microbiology
Point in time
Pulmonary
Pulmonology
QNT
Quan
Quant
Quantitative
Random
Respiratory
SUDS
WB
Whole blood

Copyright © 2024 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2024, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.

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