That's true of typical tests. Worse than that they are not good at catching regular parasites either and don't test for some of the most common parasites at all. My son had three regular ped. ordered parasite tests (he's been sick since early last year

) and we never found anything. Then we ran metametrix. They do DNA testing. You can read about it on their website (please do). Because they are looking for DNA they will catch any trace in a stool of a parasite--all parasites including worms and ones that not all labs run or that you have to order a specific lab to find. It's really far superior. They aren't having to catch a whole bug that will grow in culture to find something.
In my son metametrix caught worms and parasites (edited out the specifics but he had about every thing in the book). Just so you know--we ran the whole house because my son was carrying so much nasty stuff and other family members had (milder than him) symptoms. No one else was carrying the nasty stuff but everyone had parasite unknown. We all did Alinia. None of us had any side effects at all. Hookworm and pinworm treatments (and I assume other worms) are really easy too. They do take treat 1-3 days (depending on worm) and then treat again in two weeks treatment.
Andrew was very sick as you might imagine. His stools are now once a day or every other day and normal looking. No more vomitting either (he was vomitting several times a week). He is eating better and I think gaining weight. We have to wait a couple of more weeks to rerun the test on him.
Here is my thoughts: test him, see what he has. I expect he's got something (s). Assume everyone else is possibly also infected and be careful with stool (handwashing), hot wash and dry bedding, careful w/showering him and toileting and etc. (edited out specifics here)
Figure out what he has and then treat him. Make sure he's done and then test everyone else. My thinking there is the test is expensive and we tested all of us. I'm glad we did but I'm waiting on retesting the rest of us until I know we killed off Andrew's bad guys. I don't want to wonder if we picked up something from him.
If other family members are actually symptomatic or there are other kids I'd test them now. But if I'm reading right you're just concerned because parasites are very contagious and you're only dealing with adults, right? Adults are far less likely to spread their stuff. As far as pregnancy that is hard. But let's not worry about it until you know. Even if you're carrying something that doesn't mean you'll pass it back to him esp. now that you know to be careful. Some people have had luck with d. earth in pregnancy for pinworms I believe. And there may well be other options if there are other bugs. But you may be like us and even with Andrew carrying a world of mess no one else really had anything much.
I may edit some of this message because of the detail about the junk he's carrying so let me know you've read it w/out quoting the message, ok?
