Reference ranges
Optimal ranges are tighter than standard lab ranges and reflect functional-medicine targets, not the populations they were derived from. Reference bands depend on sex, age, and circumstance — Juno's lab analysis layers your profile context onto the printed range when you paste a value.
Peptide relevance
Pituitary gonadotropin. In men, FSH stimulates Sertoli cell function and spermatogenesis. In women, FSH stimulates ovarian follicle growth — rises sharply in perimenopause and menopause (>25 mIU/mL postmenopausal). Exogenous androgens (TRT, AAS) suppress FSH via negative feedback — low FSH + low LH on TRT is expected. Kisspeptin (a peptide) directly stimulates GnRH → LH/FSH release; one of the few peptides with documented HPG axis effects. CJC-1295 + Ipamorelin: minimal FSH effect. RANGES SHOWN ARE FOR ADULT MEN; women have cycle-dependent values (follicular ~3-10, menopausal >25).
Peptides that influence this marker
Documented to affect this marker. Click through for the full evidence-tiered profile.
Have a recent FSH (follicle-stimulating hormone) value?
Paste it on the lab analysis page. Juno reads your active stack + (if shared) your medications and conditions, and surfaces plausible contributors with citations. Doesn't diagnose.
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