We would NEVER antigen type for Lua. We believe it to be pointless and a huge waste of time!!!!!! Your question of "Why is it on the panels"... Yes, for no other purpose other than to identify some weird reaction that doesn't match anything else. Look at your panels.....there are many non-sensical (in my opinion) antigens on there. Cw, Jsa, Kpa, Lua, etc, etc..... It was presented at AABB years ago that if the antigen you are trying to "rule out" on a panel is TOTALLY negative on all cells and you are seeing reactions you can rule out that particular antibody. (Not sure how I feel about this...but I most certainly don't think I know more than the AABB people!!)