LOINC
Version 2.73

45156-7Rheumatoid factor [Presence] in Body fluid by Latex agglutinationActive

Part Descriptions

LP16738-4   Rheumatoid factor
Rheumatoid factor (RF or RhF) is a blood test performed in patients with suspected rheumatoid arthritis (RA). It is an auto-antibody directed against the Fc portion of IgG, which is itself an antibody. RF and IgG form immune complexes, which are part of the disease process (serum sickness) of various rheumatological diseases. Storage/Transport Temperature: 1 mL plasma or serum, 2-8°C. (Min: 0.2 mL) Submit specimen in an ARUP Amber Transport Tube. Rheumatoid factor can also be a cryoglobulin (antibody that precipitates on cooling of a blood sample); it can be either type 2 (monoclonal IgM to polyclonal IgG) or 3 (polyclonal IgM to polyclonal IgG) cryoglobulin. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia, Rheumatoid factor (Wikipedia)

LP16738-4   Rheumatoid factor
Antibodies found in adult rheumatoid arthritis patients that are directed against gamma-chain immunoglobulins. Source: National Library of Medicine, MeSH 2006

LP7238-1   Body fld
The LOINC "Body fld" System represents body fluids other than serum, plasma, blood, urine, and cerebrospinal fluid. When a LOINC term with the System "Body fld" is used, the specific specimen source or body fluid type should be reported elsewhere with the result. Where more specific terms for pleural, peritoneal, synovial fluid, etc. exist, we encourage you to use the more specific terms. In contrast to "Body fld", the System "Asp" in LOINC represents the fluid withdrawn during an aspiration procedure from an abnormal collection of fluid, such as from an abscess or cyst. "Asp" is used for abnormal fluid collections that are aspirated, while "Body fld" is used for named body fluids, such as synovial fluid or peritoneal fluid, that are not inherently pathologic. Source: Regenstrief LOINC

Fully-Specified Name

Component
Rheumatoid factor
Property
PrThr
Time
Pt
System
Body fld
Scale
Ord
Method
LA

Additional Names

Short Name
Rheumatoid fact Fld Ql LA
Display Name
Rheumatoid factor LA Ql (Body fld)
Consumer Name Alpha
Rheumatoid factor, Body fluid

Basic Attributes

Class
SERO
Type
Laboratory
First Released
Version 2.17
Last Updated
Version 2.56
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.
Order vs. Observation
Both

Member of these Groups

LG9624-0 Rheumatoid factor|PrThr|Pt|Body fld

Language Variants Get Info

zh-CNChinese (China)
类风湿因子:存在情况或阈值:时间点:体液:序数型:胶乳凝集试验法
nl-NLDutch (Netherlands)
reumafactor:aanwezigheid:moment:lichaamsvocht:ordinaal:latexagglutinatie
et-EEEstonian (Estonia)
Reumatoidfaktor:PrThr:Pt:Fx:Ord:LA
fr-BEFrench (Belgium)
Facteur rhumatoïde:PrThr:Temps ponctuel:Liquide biologique:Ordinal:Agglutination au latex
fr-CAFrench (Canada)
Facteur rhumatoïde:Présence-Seuil:Temps ponctuel:Liquide biologique:Ordinal:Agglutination au latex
fr-FRFrench (France)
Facteurs rhumatoïdes:Présence/Seuil:Ponctuel:Liquide biologique:Qualitatif:Agglutination latex
el-GRGreek (Greece)
Ρευματοειδής παράγοντας:PrThr:Χρονική στιγμή:Σωματικό υγρό:Τακτική:Μέθοδος συγκόλλησης ανοσοσφαιριδίων latex
it-ITItalian (Italy)
Fattore reumatoide:PrThr:Pt:Liquido corporeo:Ord:LA
pl-PLPolish (Poland)
czynnik reumatoidalny:obecność lub wartość progowa:Punkt w czasie:Płyn ustrojowy:Porządkowy:Aglutynacja lateksowa
pt-BRPortuguese (Brazil)
Fator reumatóide:ACnc:Pt:LiqOrg:Ord:Aglutinação em látex
ru-RURussian (Russian Federation)
Ревматоидный фактор:PrThr:ТчкВрм:Тело ждк:Пор:ЛА
es-MXSpanish (Mexico)
Factor reumatoide:Presencia o umbral:Punto temporal:Fluído corporal:Ordinal:Aglutinación de látex
es-ESSpanish (Spain)
Factor Reumatoide:PrThr:Punto temporal:Fluido corporal:Ord:Aglutinación de latex
tr-TRTurkish (Turkey)
Romatoid faktör:MevcEşik:Zmlı:Vücut sv:Srl:LA

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=45156-7