Ping, that seems expensive.
My FS believed in issues aswell but he didn't test me for everything and he couldn't read some of the results like T cells as this isn't his field of knowledge. With Dr M they'll take about 14 vials of blood.
You can probably start with your FSs blood tests for immune issues so you have some results by the time you speak with Dr M but he'll probably send you off for more blood tests.
Also, everytime I had a biopsy for nkc it was between day 21 and 24.