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  • Title: The use of pooled red cells and column techniques for routine red cell antibody detection.
    Author: Eggington JA, Bromilow IM, Duguid JK.
    Journal: Transfus Med; 1996 Dec; 6(4):345-9. PubMed ID: 8981730.
    Abstract:
    The object of antibody screening is to detect all clinically relevant antibodies. In order to do this effectively red cells are selected with an appropriate antigen profile. The introduction of column techniques for antibody screening by indirect antiglobulin testing (IAT) and two-stage enzyme testing (ETC) is perceived to lead to an increased sensitivity and an ability to detect red cell antibodies more easily than by traditional tube techniques because reactions in columns are more easily read and are stable. We evaluated the use of a column technology with pooled red cells for routine antenatal screening. The pooled cells used contained at least one cell with homozygous antigen expression for the majority of clinically significant antibodies known to be present, except for Kell. Pooled cell results were not as easy to read in gel columns when compared with single cell results due to weaker reactions which were often diffused throughout the gel in the column. We concluded that the use of pooled cells led to a decreased sensitivity which proved problematic for the interpretation of results. We used a two-cell and a three-cell pool and found that detection of known antibodies was reduced in IAT and ETC methods.
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