21 September 2019 (Saturday) - Anti-A (?)

This picture appeared on the Facebook “Blood Bank Interest Group” page. Clearly we have someone whose cell group is “B” but with no anti-A in the serum. The caption read “something basic but not often”.

It turned out that the patient *did* have anti-A in the serum, but it’s thermal range was rather low, and didn’t work in the warm ambient temperature.
In the fifty comments that the picture generated all sorts of possible causes were discussed, some plausible, some nonsensical. I do wish people would post what the case is supposed to be illustrating rather than saying “what do you think?” and leaving it to the reader to sort the plausible from the impossible.

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