If the auto control in gel is positive, there is high chance that the other screening cells reactions in gel also positive, strength of variation may be possible. Since gel is more sensitive to warm auto, tube test including DAT may not catch. I will switch to LISS screen (not PEG) to see if screen is still positive. Sometime even DAT negative which normally not justifies to do eluate, but if you really perform the elution, there may have positive reactions across over the panel since elution tends to be more sensitive to catch warm auto. This is why to call a pt has warm, the eluate must have positive reactions as a minimum. WAA is not regarded as clinically significant, but interfering routine tests. For the future reference, you can put a comment in this pt folder to say like use LISS to do antibody screen. If WAA strong enough, auto/allo adsorption may be needed. In that case, the DAT will be surely positive.