Gene

DIO1

DIO1 makes type 1 deiodinase, an enzyme involved in thyroid-hormone processing. The rs2235544 studies measured small differences in adult circulating free T3, free T4, and their ratio; they did not measure the enzyme's catalytic efficiency in a person. This marker cannot show thyroid health, symptoms, disease, medication response, or a person's current hormone levels.

Traits DIO1 shapes

Thyroid hormone activation (bloodstream)

Markers (rsIDs)

rs2235544

Reference databases

HGNC gene symbol report: DIO1
NCBI Gene: DIO1

How Biome reads this

Biome's whole-genome test reads this from one saliva sample, alongside all 3.2 billion letters of your DNA.

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This page is for educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure, or prevent any disease. Genetic results describe tendencies and predispositions, not diagnoses. Always consult a licensed clinician before making decisions about your health, medications, or supplements.