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O - Swisstransfusion

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• Routine ABO, (RhD, RhCcEe, K) phenotyping of first and second time<br />

donors on Olympus PK 7200 with monoclonal anti-A, anti-B reagents<br />

and reverse typing (A1, A2, B, O red cells)<br />

• Unclear results in ABO proved in tube test (incubation 30 minutes<br />

at room temperature) with monoclonal anti-A, anti-B reagents and<br />

reverse typing (A1, A2, B, O red cells)<br />

Since May 2004<br />

• Samples with weak or negative A and B antigens and missing or<br />

weak (+) corresponding isoagglutinins<br />

Low resolution ABO genotyping for A, A2, B, O01, O03 alleles (PCR-SSP)<br />

• If no correlation between phenotype and genotype<br />

ABO subtyping for 36 rare alleles (Ael, Ax, Aw, Bx, Bw, etc.) (PCR-SSP)<br />

• If still no correlation between phenotype and genotype<br />

Exon amplification and sequencing of entire ABO gene from genomic DNA

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