Our back-up method is gel for ABID. When we performed our validation testing, we did not find clinically significant antibodies on the ECHO that manual gel did not, however, we did find less cold antibodies, Lewis Abs, anti-M's, and many fewer Anti-D's from RhIg prophylaxsis. We have also picked up warm autos on the ECHO that had negative ABSC in gel and in LISS/tube. Immucor's current Ready-ID panel is making us a little crazy with the Bg pos cell on the panel also being Cw pos and Kpa pos, but other than this, we have been very happy with our ECHO and the techs like it very much.