Volume and Newer but "least incompatible" vs. Older but "compatible"
Since Feb.2008 to end Sept.2010 I've had 130 units of PRBCs.
Besides the date of donation, there is also the variation of actual volume amount which for me has ranged from 238ml to 343ml (a difference of 44 per cent is cosiderable).
Another variable to consider as the number of transfusions and antigens increase is the cross/match process which takes longer to do as well as becoming more difficult to find a donor that is compatible.
For me fresh is preferred but compatible match is essential regardless of age.
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