That discussion precedes my engagement a little, @Christian_Reich , however, in the linked discussion, the final sentence is more or less: have we settled the convention? => No!..
So, what are you asking? Finish the discussion or invent a new vocabulary? When I look at the vocabulary, we have a long list of entries for whole blood, lots of entries for red blood cells (this doesn’t look like we have a good consolidated approach), a better collection for platelets and again a long list for fresh frozen plasma.
And to your question about proprietary concepts not being standard: I think today this is common practice for various reasons, right? You cannot necessarily use them in network studies everywhere, but maybe in your particular network? Yes, it would be preferable if we would map all of these to a common standard concept (in a model like RxNorm Extension? => this would become huge), but if we aim at mapping them less specifically to; let’s say SNOMED, maybe more granular analysis within those proprietary ones would be made harder? Please provide some advice on how to finish the work!