75263-4
LOINC Code
| LOINC code | 75263-4 | |
|---|---|---|
| name | ||
| 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. | |
| status | ACTIVE | |
Fully-Specified Name | ||
| component | Blood group antibody | |
| property | PrThr = Present or threshold: The Property PrThr stands for “Presence or Threshold”, meaning either a) the actual presence or absence of an analyte, or b) that the amount of analyte detected is over some predetermined threshold. | |
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | |
| system | Ser/Plas Ser = Serum Plas = Plasma | |
| scale | Ord = Ordinal: Ordered categorical responses, e.g., 1+, 2+, 3+; positive, negative; reactive, indeterminate, nonreactive. | |
| method | Blood group antibody screen.GEL | |
Additional Names | ||
| short name | Ab; Bld gp Ab Scn; BLOOD BANK; Ordinal; Pl; Plasma; Plsm; Point in time; PR; QL; Qual; Qualitative; Random; Scn; Scr; Screen; Scrn; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR | |
Basic Attributes | ||
| class | BLDBK | |
| type | 1 Laboratory | |
| order vs. observation | Bld gp Ab Scn S | |
History/Usage | ||
| first released | ||
| last updated | 2.79 | |
| last change type | NAM - change to Analyte/Component | |
Related Names | ||
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