Evidence check: FT4 in the context of Fruchtbarkeit

The question regarding the evidence for FT4 in the context of fertility is not directly addressed in the provided context. The available knowledge snippets cover DNA tests, microbiome, cortisol, and a fertility check that does not mention FT4. Generally, FT4 (free thyroxine) is a key marker of thyroid function, and thyroid disorders can impact fertility. However, the context lacks specific studies or guidelines supporting the use of FT4 testing in fertility assessments. Consumer tests like MyBody-X may measure FT4, but interpretation is limited due to diurnal variation, lack of fertility-specific reference ranges, and the need for clinical evaluation. Therefore, the evidence is considered unclear. It is advisable to consult a specialist for comprehensive fertility diagnostics, including thyroid parameters.