My wife and I are in the process of selecting the right donor for my/our upcoming IVF cycle, which unfortunately, our options are extremely limited. Donor must be CMV negative, cannot be a carrier of thalassemia, and our preferably Hispanic/Latino decent. Four out of the six are listed as “ID Disclosure” which is like $700 more than the other donor types. Why is that, is there any other quality differences causing the increased cost?