what is fsh pcos terms

FSH (Follicle Stimulating Hormone) is responsible for the maturation of the follicles.

The normal ratio of FSH to LH (Luteinizing Hormone) is 1:1 but in women with PCOS, LH levels are usually elevated.

An LH to FSH ratio or 2:1 or even 3:1 is often considered to be diagnostic of PCOS.