Hi zigzag with regards to NK cell test a FS called Dr Gavin Sacks at IVF Australia Bondi is the only one i think that does the biopsy to test for it.
It is treated with 30g prednisone a day, clexane and cardiprin.
Good luck with the next cycle i know it is so hard to let it go in the end but fingers crossed for you that the DHEA has made a difference and you get a good result.
x