The main problem in systemic body odor, especially fecal/gas/sewage/garbage etc body odors, is that at the moment no such condition is accepted by the medical system and so there is no testing for it. The only real exceptions being mainly trimethylaminuria, and rarely dimethylglycinuria (although it is unknown if more than one has been positive for this metabolite). Until a pattern is known for 'fecal body odor', the obvious test would be for testing all odorous metabolites, such as a malodourous Volatile Organic Compound Urine test. At the moment this remains unobtainable from the medical system (although very possible to do), and so sufferers have to look around for other available tests. Interestingly, a Belgian Professor with a long interest in Chronic Fatigue Syndrome, which many fecal body odor sufferers tend to have, has come up with a connection with CFS and hydrogen sulfide (H2S). H2S has often been mentioned on this blog, and is very much a suspect yet to be ruled out in fecal body odor syndrome in particular. Some fecal body odor sufferers have mentioned smelling of rotten eggs at times, which is most likely hydrogen sulfide. Professor Kenny De Meirleir has now launched a very inexpensive hydrogen sulfide urine test in Europe, which would seem a worthy exploratory test at this stage of understanding fecal body odor as a group, under the premise of ruling it out. It is sold through his Belgian company, Proteo Biopharma One caveat is that perhaps the test is looking for the metabolized/oxidized (neutralized) version of hydrogen sulfide, which is hydrogen sulfate (?), whereas in people with fecal body odor, perhaps the H2S is not oxidized. At the moment we don't know what metabolite the test is exactly looking for. The website says the test is currently at a non-profit price (see the FAQ page) and is available to anyone in many countries including USA, Canada, Japan and Australia, as well as many European countries. It would be very helpful if any fecal body odor sufferers let the group know their result somehow, whether by email to Maria, or on the body odor forums. In the future, MeBO Research hopes to do such tests in an informal case study manner. For instance, testing 5 people for this would cost around $200.
Daily Telegraph article on the hydrogen sulfide urine test Other Daily Telegraph article on the hydrogen sulfide urine test Proteo Biopharma Website
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