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Blood group antibody:PrThr:Pt:Ser/Plas:Ord:Blood group antibody screen.GEL - CISMeF
Blood group antibody:PrThr:Pt:Ser/Plas:Ord:Blood group antibody screen.GELLOINC code
Preferred Label : Blood group antibody:PrThr:Pt:Ser/Plas:Ord:Blood group antibody screen.GEL;
LOINC status : ACTIVE;
LOINC display name : Blood group antibody screen GEL Ql;
LOINC long common name : Blood group antibody screen [Presence] in Serum or Plasma by GEL;
LOINC short name : Bld gp Ab Scn SerPl Ql GEL;
LOINC 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.;
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