O - Swisstransfusion
O - Swisstransfusion
O - Swisstransfusion
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• Plasma or serum samples of all 6,387 patients tested in our<br />
laboratory from January 1 thru December 31, 2007 stored at -30°C.<br />
• Look back procedure (January 2008) identifying patients who<br />
randomly received ABO variants with non-deletional O alleles<br />
• In patients with follow up samples Titration of anti-A and anti-B<br />
in samples at the time of the cross-match of the ABO variant<br />
and in follow up samples in gel technique using A1 and B red cells:<br />
• Neutral gel cards: incubation 15 minutes at room temperature<br />
• Antiglobulin gel cards: incubation 15 minutes at 37°C
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