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In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
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The ovaries are roughly the size of almonds and measure approximately 2 to 3 centimeters in length. These paired structures are situated within the pelvic region and are anchored by the mesovarium—a peritoneal extension that also connects them to the wider structure of the broad ligament. The support system extends to the suspensory ligament, housing blood and lymphatic vessels. In addition, the ovarian ligament tethers the ovaries to the uterus.
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The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle...
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Z-Scores for Assessing Ovarian Reserve in Young Patients Undergoing Fertility Preservation

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Ovarian reserve testing: a user's guide.

Reshef Tal1, David B Seifer2

  • 1Division of Reproductive Endocrinology and Infertility, Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, New Haven, CT.

American Journal of Obstetrics and Gynecology
|February 26, 2017
PubMed
Summary
This summary is machine-generated.

Ovarian reserve testing helps assess fertility potential and guide treatment. Antimüllerian hormone (AMH) and antral follicular count (AFC) are superior to follicle-stimulating hormone (FSH) for evaluating ovarian reserve.

Keywords:
antimüllerian hormoneantral follicular countfollicle-stimulating hormoneovarian biomarkersovarian reserveprimordial follicles

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Area of Science:

  • Reproductive Endocrinology
  • Gynecology
  • Infertility Diagnostics

Background:

  • Ovarian reserve, influenced by age, genetics, and environment, is crucial for fertility potential.
  • Clinicians need reliable methods to assess ovarian reserve for fertility counseling and treatment planning.
  • Accurate ovarian reserve testing is essential for managing fertility treatments and understanding reproductive lifespan.

Purpose of the Study:

  • To review the current state-of-the-art in ovarian reserve testing.
  • To provide a guide for obstetricians/gynecologists and reproductive endocrinologists on ovarian reserve assessment.
  • To highlight the ideal characteristics of an ovarian reserve test and compare existing methods.

Main Methods:

  • Review of current literature on ovarian reserve testing methods.
  • Evaluation of diagnostic accuracy and clinical utility of various ovarian reserve markers.
  • Comparison of antral follicular count (AFC), antimüllerian hormone (AMH), and day-3 follicle-stimulating hormone (FSH).

Main Results:

  • No single ovarian reserve test is perfect, but AFC and AMH show good predictive value.
  • AMH testing offers convenience with untimed sampling and potential for standardization.
  • AFC and AMH are superior to FSH in evaluating ovarian reserve and predicting response to ovarian stimulation.

Conclusions:

  • AMH is the preferred biomarker for ovarian reserve evaluation due to its convenience and predictive value.
  • Ovarian reserve testing aids in individualizing fertility treatment protocols and minimizing risks.
  • Ovarian reserve assessment is valuable for cancer patients, PCOS diagnosis, and counseling on reproductive lifespan.