Free T4 and Free T3 (fingerstick)

What is estradiol/estrogen?

Estradiol, a form of estrogen, is an important female sex hormone, but occurs in smaller quantities in men as well. It plays a crucial role in the regulation of the female reproductive system, including the menstrual cycle and fertility. Also known as estradiol and estrogen.

Why test estradiol?

Testing estradiol can be useful for several reasons. In women, it can help evaluate fertility problems, irregular menstruation, or symptoms of menopause. In men, it can be useful in investigating gynecomastia (development of more breast tissue than normal) or problems with the testicles. It can also provide insight into the general hormonal balance for both sexes.

What does it indicate?

Estradiol levels provide insight into the body's hormonal balance. Abnormal levels may indicate problems with the ovaries, testicles, adrenal glands, or pituitary gland. It may also be indicative of certain genetic conditions, hormone-related tumors, or exposure to external estrogens.

What does a high estradiol level mean?

A high estradiol level may indicate various conditions, including ovarian tumors, gynecomastia in men, or early puberty in children. It can also be a sign of hyperthyroidism or the use of certain medications, such as hormone replacement therapy.

What does a low estradiol level mean?

A low estradiol level may indicate reduced ovarian function, menopause, or problems with the pituitary gland. In men, it may indicate reduced testicular function. A low level can also be associated with osteoporosis, a condition that weakens the bones.