We use 3 cell screen, 4 cell screen, IgG check cells and A1 and B cells for tube tests, plus a few of the monoclonal antisera. Only negative comment I have received from staff is that the IgG check cells tend to be weaker than Immucor, more like 2-3+ rather than 3-4+. Saved a lot of money making this switch, and we are looking at changing a few more reagents in 2019.