Hello @dayvu, Welcome to Mayo Clinic Connect. I'm not familiar with Mycotoxin testing but there is some information on the Mycotoxin tests National Institutes of Health website here:

Mycotoxin Detection in Human Samples from Patients Exposed to Environmental Molds
-- https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2680627/

Mayo Clinic also has some information on mold allergy diagnosis and treatment that may be helpful
-- https://www.mayoclinic.org/diseases-conditions/mold-allergy/diagnosis-treatment/drc-20351525

Also found some information from the on urine testing validity that may provide some information for you.

Notes from the Field: Use of Unvalidated Urine Mycotoxin Tests for the Clinical Diagnosis of Illness — United States, 2014
-- https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6406a7.htm

@glenb may be able to provide more information for you on the test. If you would like to seek help from Mayo Clinic, contact one of the appointment offices. The contact information for Minnesota, Arizona and Florida can be found here http://mayocl.in/1mtmR63.

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