I agree that we should head this way, and obviously OB/Gyn physicians need more education on this issue. Most of them use other laboratories for their prenatal testing, and then when the patients arrive here to deliver, we get different results from the other Laboratory and then we are recommending RhIg based on weak D results (or not, based on our results with our methodology) and it is not taken very well.
I think the problem for us is that we do not have molecular testing available, so we send our samples out to the reference lab for Rh genotype testing. The results do not come back for 72 hours, so we are still giving the RhIg as the results are still pending. It will help for future pregnancies though, as long as the mom comes back to this hospital.