There isn't a proven blood test for IBS. And Prometheus labs has not published any research papers in reputable IBS research journals on the use of their technique for detecting IBS. Also note that Prometheus labs claims their test only has a 50% sensitivity - not very good for a diagnostic test. Also the company says their test is only an aid for clinicians. It is not a definitive test. If you think your IBS was misdiagnosed by your GI doctor then ask for a second opinion from another GI doctor.
-------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS