How are FT3 and Fruchtbarkeit related?

FT3 (free triiodothyronine) is a thyroid hormone that influences metabolism and the hormonal axis. An imbalance can impair fertility, e.g., through cycle irregularities or implantation issues. However, the Fertility Check described here measures AMH, estradiol, progesterone, FSH, and prolactin – not FT3. The evidence for a direct FT3–fertility link is moderate, based on clinical observations, but not from this specific test. Without medical evaluation, FT3 should not be interpreted in isolation.