was ist ein normaler schilddrüsenwert — can a DNA test help?

What is a 'normal thyroid value'? It depends: TSH, fT3, and fT4 reference ranges vary by lab, age, and assay. Typically TSH 0.4–4.0 mU/L is considered normal, but some guidelines suggest narrower limits (0.5–2.5). A DNA test like MyBody-X cannot measure current thyroid hormone levels – it only checks genetic variants. Some variants (e.g., in DIO2, TSHR) may modestly affect thyroid hormone conversion or receptor sensitivity, but the evidence is weak and not clinically actionable. Consumer DNA tests are designed for nutrition, longevity, and wellness, not for diagnosing thyroid disorders. To assess thyroid function, a blood test ordered by a physician is essential. DNA results might offer background context, but they cannot replace standard clinical lab work. Be cautious of marketing claims that overstate the relevance of single SNPs for thyroid health.