LOINC
Version 2.67

75263-4Blood group antibody screen [Presence] in Serum or Plasma by GELActive

Term Description

Antibody screening is used to demonstrate unexpected antibodies (other than ABO) and is performed on both donors and recipients to help ensure compatibility between recipient antibodies and donor red cells. GEL antibody testing (column agglutination technology) is an alternative to tube testing and uses a microtube with a reaction chamber containing dextran acrylamide gel and other elements. Red cells and plasma are added to the gel column top, incubated, and spun. In the microtubes filled with gel particles and anti-IgG, the particles separate the red cell clusters physically (larger agglutinates, less migration through gel) and the anti-IgG captures the IgG coated red cells and decreases their migration through the gel immunologically. For negative results, red cells appear in a button at the bottom of the microtube. For positive results, the red cells are stopped in areas throughout the microtube; the more positive the reaction, the higher the position in the tube. GEL testing can also be done without IgG in the gel (for ABO testing for example). Sensitivity is similar to PEG testing. GEL testing can be automated or performed manually.
Source: Regenstrief LOINC

Part Description

LP67167-4   Blood group antibody screen
Detects atypical IgG antibodies prior to transfusion or during pregnancy. The screening test is designed specifically to detect IgG antibodies and some IgM antibodies (non ABO) may also be detected. Antibodies detected by the antibody screen should then be identified, and a titer performed if the antibody identified is considered to be clinically significant during pregnancy. Source: LOINC partner 1

Fully-Specified Name

Component
Blood group antibody screen
Property
PrThr
Time
Pt
System
Ser/Plas
Scale
Ord
Method
GEL

Additional Names

Short Name
Bld gp Ab Scn SerPl Ql GEL
Display Name
Blood group antibody screen GEL Ql

Basic Attributes

Class
BLDBK
Type
Laboratory
First Released
Version 2.48
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

Example Answer List LL360-9

Source: Regenstrief Institute

Answer Code Score Answer ID
Positive Copyright http://snomed.info/sct ID:10828004 Positive (qualifier value) LA6576-8
Negative Copyright http://snomed.info/sct ID:260385009 Negative (qualifier value) LA6577-6

Language Variants Get Info

zh-CNChinese (CHINA)
血型抗体筛查:存在情况或阈值:时间点:血清/血浆:序数型:GEL 抗体检测法
fr-CAFrench (CANADA)
Anticorps des groupes sanguins dépistage:Présence-Seuil:Temps ponctuel:Sérum/Plasma:Ordinal:GEL
fr-FRFrench (FRANCE)
Anticorps irréguliers (RAI) dépistage:Présence/Seuil:Ponctuel:Sérum/Plasma:Qualitatif:Gel
it-ITItalian (ITALY)
Gruppo sanguigno, screening anticorpo:PrThr:Pt:Siero/Plasma:Ord:GEL
pt-BRPortuguese (BRAZIL)
es-ESSpanish (SPAIN)
Examen de anticuerpos de grupos sanguineos:PrThr:Punto temporal:Suero o Plasma:Ord:Gel

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=75263-4