GirlFromSydney, I have elevated NK cells (probably more than slightly elevated). I'm having intralipids at CFC, so it is something they do but I'm not entirely sure how 'into it' they are over there. It felt like they'd just do it if you asked. It costs about R2200 which is a bit more than I pay here but not too bad.
As for whether it works, I can only add that I have only achieved pregnancies since I went on it. Could be coincidental but I won't take the chance on this DE cycle :-)