I don't want to presume to tell you your own business, but I think you are being a little anal retentive about expire dates. Without going into a long disertation as to how they are set by the FDA and DepAg, all I will say is that it is essentially arbitrary.

I have a couple of doctor friends that have been working with Doctors Without Borders now for about 10 years. 90% of the time, ALL they have is epired donated goods, and there have never been any complaints or problems. Caveat: biologicals - not relevant to this discussion.