An estradiol test measures the amount of the hormone estradiol in your blood. It’s also called an E2 test.An estradiol test measures the amount of the hormone estradiol in your blood. It’s also called an E2 test.
This test measures the level of the hormone testosterone in your blood. Testosterone is a male sex hormone (androgen) that helps male features develop. Testosterone is made in the testes in men, the ovaries in women, and in the adrenal glands.
A prolactin (PRL) test measures the level of prolactin in the blood. Prolactin is a hormone made by the pituitary gland, a small gland at the base of the brain. Prolactin causes the breasts to grow and make milk during pregnancy and after birth. Prolactin levels are normally high for pregnant women and new mothers.
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