@arichards3 indeed, but its more accurate than a blood test for mycotoxins, as the mycotoxins are in a lower concentration in the blood and can degrade or bind to proteins. the other alternative is tissue sampling, but that's certainly more invasive. the urine test combined with environmental testing which would provide context for the urine test results is a practical way to go. of course, a physician who specializes in mycotoxins is highly desirable, if you can find one and get an appointment.