I'm not sure I'd like to try antivirals completely blind without any indications either, but didn't you say you have high (or highish) IgG, IgA and lymphocytes? That is much more solid that NK cell function tests. High lymphocytes with neutropenia is very strange.
What level or range of levels are your IgG, IgA and Lymphocytes out of curiosity. A long time ago (1990's) Professor Komaroff found a subset of CFS/ME patients with high total IgG (15 - 20). It is a pity those patients weren't followed up as a subset.
Also, have you ever had your ferritin and transferrin saturation done?
I have had a few iron studies done which were normal.
pre antivirals i had a high total lymphocytes which has come down with antivirals, cd8 t cells have always been elevated above the normal range but have lowered with antivirals.
I have had a number of tests which showed mild neutropenia but when on valcyte, which is known to lower neutrophils, they did drop to a moderate low level. this i think played apart in my sinus issues, this has eased up since being of valcyte.
immunoglobulin tests which i havent had for awhile and my initial test i think pre antivirals showed slightly high above normal range for igg and iga immunoglobulins, igm immunoglobulins were normal. SInce antivirals igg has returned to normal, iga still high.
I had been on antivirals for several months when i was somehow able to get a viral titres test for cmv. Its was 1.2, anything over 1 one classed as an active infection, i assume it would have been higher if i wasnt on antivirals. lab ranges etc seem different here to what i have seen over seas. I have not been able to get any viral titres measured since, although i have tried, i dont understand the reasoning for this?
Lymphocytosis with neutropenia i dont think is rare amongst us as i have spoken with quite a few with similar abnormalities.
Why dont u think an nk function test isnt a solid test? i think this test will eventually be a biomarker or a part of a group of biomarkers to diagnose ME??