that's true, yes...and other symptoms can be vague and not specifically point to worms. before i became ill (but still infected), i had no parasite markers except eosinophilia and high IgE. although can still have parasites without this signs. otherwise i didn't see any, feel any, and basically i felt normal.
after the infection got worse, there were many blood changes, as well as i saw and felt them. and i was sick, fatiqued, weak, anemic, non stop anxiety, hives, crawling.
i just meant that when levels get very high, it's easier to know what the problem is because they won't be as hidden anymore. in some way you will know..