Anyone started using CorQc lot28222?  I'm getting weaker than usual rxs with A1 cell.

thanks ahead of time.

We had that problem with lot 134046.  I contacted Technical Support and shortly after that we got a Technical Communication that we were not the only ones with the issue.  It worked if we incubated at RT for a while.  We stuck it out because we knew our new shipment was due in a couple of days.  We got the SAME lot number!!  Immucor suggested confirmation of A1 reactivity by other methods and consulting your quality department and/or medical director.  We just continue to incubate at RT.  When it's colder in the lab, it works better 

This has been an ongoing Immucor issue for a couple months for us, spanning a couple lot numbers. The reactions are still macro positive at IS, so there isn't actually an issue per the package insert, but yes, they are weaker than normal. We haven't had to incubate anything that wouldn't normally be incubated.