by Dr. Chan Lowe » Sat Mar 10, 2007 11:32 pm
I'm by no means an expert in this area; however, your FSH, LH and estradiol levels are likely to be as expected while on oral contraceptives. LH and FSH respond to the body sensing a need for higher hormone levels. Their production is inhibited by the presence of estrogen. Estradiol is made by the ovary in the presence of LH and FSH.
Since oral contraceptives often contain different forms of estrogen (rather than estradiol), the estrogen from the pill will not be picked up by the blood test, making it appear that you have low estrogen levels. The LH and FSH are suppressed by the exogenous estrogen.
Your symptoms are compatible with estrogen deficiency, though there may be other causes as well. It is possible that your oral contraceptive may not have enough estrogen in it to suppress your symptoms. Many of the newer oral contraceptives have micro dose estrogens in them.
Here's where my knowledge ends: I do not know if your body being symptomatic from estrogen deficiency would be able to sense this and cause the ovaries to make more estrogen, thus raising your estradiol level. It is quite possible that the exogenous estrogen is a potent enough inhibitor to keep FSH and LH levels down even in the face of overall lack of sufficient estrogen.
I would recommend that you talk with your gynecologist, or perhaps with your endocrinologist again to get a more knowledgeable answer.
Hope this helps some.
Advice and opinions given are based on the information provided and must not be used as an official medical recommendation. The limitations of the internet prevent an appropriate evaluation. Always consult your doctor if there is concern.