I would like to know whether my immune system is in over drive or not functioing well enough. So a couple of questions. Are there any tests which will tell me this? I rarely get colds or flu but then again I don't go out a lot - but I do go to supermarkets every week so???I've probaly had 1 cold in 2 years (should I say that am I tempting fate) I didn't do well on Immunovir but maybe didn't stay on it long enough. LDN is an immune stimulator - many on here do well on it, so did they have a lot of colds/flu as part of their symptoms before LDN?