What level of FSH is diagnostic for menopause?

The correct diagnosis of menopause is typically indicated by elevated levels of follicle-stimulating hormone (FSH), reflecting the decline in ovarian function. Generally, an FSH level greater than 30 MIU/ml is used as a benchmark for confirming menopause.

During menopause, the ovaries significantly decrease the production of estrogen, and in response, the pituitary gland releases more FSH as it tries to stimulate the ovaries. When FSH levels reach this threshold of around 30 MIU/ml, it suggests that the ovarian reserve is low, with decreased responsiveness to hormonal stimulation.

A level of 50 MIU/ml is often considered diagnostic and consistent with menopause; however, 30 MIU/ml is the generally recognized point where menopause can be suspected. Levels higher than that reaffirm the diagnosis, which is why there's clinical significance associated with the 30 MIU/ml mark.

The other values listed do not align with common diagnostic criteria for menopause, as they are either too low or represent an advanced stage of ovarian failure.