Key benefits of Sterigmatocystin (STC) testing
- Sterigmatocystin pre-aflatoxin mycotoxin exposure tracking
- hard cheese and grain contamination assessment
What is Sterigmatocystin (STC)?
Sterigmatocystin is a mycotoxin structurally related to and biosynthetically linked with aflatoxins. It is produced by Aspergillus versicolor and related species on grains, hard cheeses, and some building materials. Detected in urine via LC-MS/MS.
Why is Sterigmatocystin (STC) important?
STC is classified as a possible human carcinogen (IARC Group 2B) and shares some biological properties with aflatoxin. It is less potent than aflatoxin B1 but more commonly encountered in temperate regions. Hard aged cheeses and improperly stored grains are primary dietary sources.
What insights will I get?
Your sterigmatocystin level may reflect dietary exposure from hard aged cheeses, improperly stored grains, or mold-contaminated building materials. Elevated levels may prompt review of cheese sourcing and grain storage quality.
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Method: LC-MS/MS (Liquid Chromatography/Tandem Mass Spectrometry) measuring free (unconjugated) mycotoxins in urine (CLIA 17D0919496); not cleared or approved by the FDA. Results in ng/g creatinine. Not a stand-alone diagnosis; should be interpreted in clinical context.
