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Hormonal Profile  (FSH, LH, Prolactin and Estradiol)

Remember that this article is a brief guide related to the usefulness of certain studies, only the medical professional is indicated to issue a diagnosis based on laboratory results


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A woman's menstrual cycle is counted from the first day of menstruation (that is, evident menstrual flow, not dripping or premenstrual spotting), so that the "third day" is the third day of the period. When fertility studies are performed on the woman, the third day is chosen to determine the concentration of three important substances: follicle-stimulating hormone or follitropin (FSH), luteinizing hormone or lutropin (LH) and estradiol (E2).

The  FSH (follicle stimulating hormone) test  It is usually done to diagnose problems with sexual development, menstruation, and fertility. It is used to diagnose and evaluate polycystic ovary syndrome, ovarian cysts, menstrual cycle irregularities, and infertility.

The  LH (luteinizing hormone) test  determines the concentrations of this hormone, which is also secreted by the pituitary. In women, LH levels rise mid-cycle, and ovulation occurs within 24 to 36 hours. Elevated LH levels can be a sign of different disorders, such as ovarian failure and polycystic ovary syndrome.

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The  estradiol  it is the most important form of estrogen. It is generated mainly in the ovaries, the adrenal cortex, and the placenta, and is responsible for the development of the breasts, external genitalia, uterus, fallopian tubes, and vagina.

The levels of these three hormones are determined in the laboratory from a blood sample drawn from a vein in the arm.


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