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In the old version of Search & Match Service, no overall match probabilities calculations for cord blood were done. The sorting was performed within the match class (i.e. 5/8. 4/8) based on the Total Nucleated Cell (TNC) or CD34+ cell counts (depending on what a search coordinator prefers). This has been implemented in the same way for in the new version of Search & Match Service operating with the Hap-E matching algorithm.
In the new version of Search & Match Service the number of search results can be bigger, as the Hap-E algorithm returns more potential matched cord blood units. If you experience a high number of potential cord blood options, you can for example filter on the minimum TNC, minimum CD34+ or by certain registries or mismatch locations.
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