This article is fact not conjecture , http://www.einstein.yu.edu/departments/medicine/divisions/allergy-immunology/division.aspx?id=11886 Maybe those Drs need to stop using o and p for strongyloides as it seems to be the most unreliable test , unless multiple samples are taken over multiple days, but who am I to second guess the establishment that couldn't diagnose me and put me thru hell for years. I can post medical articles all day about misdiagnosed strongyloide cases . They say in your book the disease is not caused by roundworms but patients get relief from roundworm medicine? , tests are negative but they use the most unreliable testing ,this sounds like the same medical system that failed me . At least they give their MD patients the right meds to start off with , so I will give a little credit where credit is due.