>340 beds, urban, community teaching hospital. All techs on all shifts are designated blood bankers. Reagents we keep on hand: Resolve A & B 0.8%; Panocell 16 & 20; PEG; LO-ION; C, E ,c, e, K, Fya & b, Jka & b, Lea & b, A1, M, N, S, s antisera, and Elu Kit II. I've also considered bringing in Resolve C. We do >50 AB IDs per month.
We try to send very little to reference and screen our own inventory for antigen-negative units when feasible. The focus on in-house antigen typing intensified last fiscal year when our budget was cut a few thousand, and it was cut another 40% this year. I try to bring all the technologists into the discussion as motivation. As an example: for us four units of R1R1 blood from the reference lab costs the same as seven vials of E or c antisera.