Levels stayed fairly steady in healthy men, with natural variation within each man estimated at 3.5% over four weeks.
A Turkey-based study tracked [AMH (Anti-Müllerian Hormone)](/biomarkers/hormones/amh-anti-mullerian-hormone) in 20 health
No—female infertility has many possible causes, so one hormone test cannot explain the whole picture.
That is the main takeaway from a 2026 review in *Systems Biology in Reproductive Medicine*. It covers causes of infertility in women and
