I check testosterone, estradiol, FAI and FSH yearly.
I am in Zoely for my COCP otherwise there would be no point checking estradiol if I were on an ethinylestradiol based COCP.
My targets are to maintain:
Testosterone in upper quartile of female healthy range.
FAI around 5
Estradiol > 400 pmol/L
FSH < 7 IU.
The DHEA hasn't changed my estradiol, however I am not looking for it to do this as I have adequate estradiol from the Zoely plus the small amount that suppressed premenopausal ovaries secrete.
I have no concerns about hormone sensitive cancers as I am breast free (non-carrier within BRCA2 family, risk reducing mastectomies prior to availability of genetic testing) and have been on continuous combined pill for 16 years so extremely low risk of endometrial cancer.
I do not believe gonadal steroids "cause" cancer, otherwise young women would all be riddled, but that they can hasten the growth of malignancies already present, which in many cases facilitate detection prior to metastasis, partially explaining the better survival rates of women developing breast cancer whilst on HRT.