RESUMO
The purpose of this study was to design an antibody screening method based on the micro-column gel indirect anti-globulin technique (MGIAT), using pooled cells and plasma, by comparison with the conventional indirect anti-globulin technique (CIAT) combined with a two-stage papain technique, and to explore the feasibility of the use of plasma instead of serum as test material. The samples of blood recipients in our hospital were screened for irregular antibody using pooled test cells. Screening of the antibodies was identified both by MGIAT and CIAT combined papain technique respectively. The results showed that the irregular erythrocyte antibodies were detected in 20 cases from 5,000 recipients screened by MGIAT, using pooled cells, the positive rate was 0.4%. The specificity of 20 cases of irregular antibodies was as follows: 2 cases of anti-D, 8 cases of anti-E, 1 cases of anti-C, 2 cases of anti-c, 2 cases of anti-Mi(a), 2 cases of anti-Jk(a), 1 case of anti-Le(a) and 2 cases of anti-Fy(a). Antibody was detected from 19 cases using CIAT. Anti-Le(a) was detected with adding complement from Le(a-b-) person. Only 13 cases antibody were found by papain technique. It was concluded that irregular antibody screening by MGIAT using pooled cells can take place of the CIAT combining with papain technique in clinical application. Plasma is superior to serum in antibody screening test.
