I think acceslabs is selling this test which looks like its from labcorp. I don't know how many stool sample days are analysed in this lab per test.
I have also found this lab http://parasitetesting.com/
The information on the test is very limited. Its not clear which parasites they are able to identify and I'm not finding much info on test techniques etc... Scam websites are obscure like that... But unfortunately alternative/natural or not this type of obscurity is not uncommon in USA's health care. Unfortunatealy is hard to say if parasitetesting.com is good or not.
What is the lab that your friend used?
Thanks for the reply Shrimpy