I know they used to say that autologous blood transfusion was wrong, on the basis that it was stored, and not "poured out" as per the Old Testament.
But I saw a quote on here that they realised some JW's would exercise their conscience and receive blood that was theirs "as part of the same medical procedure", I think they were actually referring to cell saving techniques in their mind, or kidney dialyses perhaps, but the words stood alone.
Those words alone could be used to interpret the use of autologous blood transfusion as a conscience issue, it would only be a "no no" if, since publishing those words (the latest nooo Lite) they had published the directive on stored blood again, more Noo Lite.