Progesterone: plays an important role in the formation and maintenance of pregnancy but is also partly responsible for the regulation of the female menstrual cycle. Its concentration also indicates whether a follicular rupture has occurred.
AMH (anti-Müllerian hormone): produced by eggs that are still maturing, so the expected length of the fertility period can be deduced from its level. As the years go by, its level gradually decreases. AMH is significantly elevated in PCOS, preventing early follicular maturation.
FSH (follicle-stimulating hormone, follicle maturation hormone): FSH initiates the growth and development of follicles in the ovaries. By determining its level, we can get information about the function of the ovaries, in case of PCOS, its value is normal or decreased.
LH (luteinizing hormone, corpus luteum stimulating hormone): LH triggers ovulation (follicular rupture). It further matures the follicle prepared by FSH; when LH levels increase, ovulation occurs. By determining its level, we can get information about the function of the ovaries, its elevated value indicates insufficiency. In case of PCOS, the normal 1:1 LH:FSH ratio shifts in favour of LH.