LOINC
Version 2.71

29771-3Hemoglobin.gastrointestinal.lower [Presence] in Stool by ImmunoassayActive

Term Description

A fecal immunochemical test (FIT) (also called an immunochemical fecal occult blood test or iFOBT) uses antibodies specific to the human globulin part of the Hemoglobin (rather than the heme part that Guiac tests target). Thus they do not react to animal, hemoglobin or myglobin) as found in meat , nor plant analogues, and drugs like Vitamin C do not effect the testing, so dietary adjustment is not needed. More important, globulin does not survive the enzymes of the upper digestive tract, so it is specific to lower GI bleeding-that is important to colon cancer screening. Different kit manufacturers have different requirements for repeats and timing, but most experts say you need samples from 2 different days for good results.
Source: Regenstrief Help

Fully-Specified Name

Component
Hemoglobin.gastrointestinal.lower
Property
PrThr
Time
Pt
System
Stool
Scale
Ord
Method
IA

Additional Names

Short Name
Hemoccult Stl Ql IA
Display Name
Lower GI hemoglobin IA Ql (Stl)
Consumer Name Alpha
Lower GI Hemoglobin, Stool

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.04
Last Updated
Version 2.64
Change Reason
The PrThr property is used for LOINC terms whose results are reported using an ordered categorical scale, regardless of whether or not an internal threshold was used to make that determination. This change was approved by the Laboratory LOINC Committee in June 2016. Changed Component to Hemoglobin.gastrointestinal.lower to make the term more descriptive and easier to find. The method was changed to IA for consistency across Classes.
Order vs. Observation
Both
Common US Lab Results Rank
779
Common SI Lab Results Rank
779
Common Orders Rank
280

Reference Information

Type Source Reference
Mapping Guidance Regenstrief Help FIT test Mapper’s Guide for the Top 2000 plus LOINC Laboratory Observations

Member of these Panels

LOINC Long Common Name
54037-7 HEDIS 2009 panel
57820-3 HEDIS 2010 panel
60442-1 HEDIS 2011 panel
67767-4 HEDIS 2012 panel
72199-3 HEDIS 2013 panel
74234-6 HEDIS 2014 Value Sets
75868-0 HEDIS 2015 Value Sets
79544-3 HEDIS 2016 Value Sets
82955-6 HEDIS 2017 Value Sets
87625-0 HEDIS 2018 Value Sets
90766-7 HEDIS 2019 Value Sets
94137-7 HEDIS 2020 Value Sets
96068-2 HEDIS MY 2020 Value Sets

Language Variants Get Info

zh-CNChinese (China)
血红蛋白.胃肠道.下段:存在情况或阈值:时间点:大便:序数型:免疫测定法
nl-NLDutch (Netherlands)
hemoglobine.gastro-intestinaal.distaal:aanwezigheid:moment:feces:ordinaal:immunoassay
fr-CAFrench (Canada)
Hémoglobine.gastro-intestinale.inférieur:Présence-Seuil:Temps ponctuel:Selles:Ordinal:IA
fr-FRFrench (France)
Hémoglobine gastrointestinale inférieure:Présence/Seuil:Ponctuel:Selles:Qualitatif:Immunoanalyse
it-ITItalian (Italy)
Emoglobina.gastrointestinale.bassa:PrThr:Pt:Feci:Ord:IA
ko-KRKorean (Korea, Republic of)
혈색소.위창자:임의농도:검사시점:대변:순위척도:효소법
pt-BRPortuguese (Brazil)
Hemoglobina.gastrointestinal:ACnc:Pt:Fezes:Ord:Imunológico
es-ARSpanish (Argentina)
hemoglobina.gastrointestinal:concentración arbitraria:punto en el tiempo:materia fecal:ordinal:inmune
es-ESSpanish (Spain)
Hemoglobina gastrointestinal baja:PrThr:Punto temporal:Heces:Ord:IA

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=29771-3