When to See a Fertility Specialist: The Clinical Thresholds

What is the clinical definition of infertility?

Infertility is defined as the failure to achieve a clinical pregnancy after 12 months of regular, unprotected intercourse. For women 35 and older, the threshold is shortened to 6 months because age-related changes in egg quantity and quality are clinically meaningful 1Ref 1Practice Committee of the American Society for Reproductive Medicine (2021).Fertility evaluation of infertile women: a committee opinion.Defines the 12-month (6-month for women ≥35) threshold for infertility diagnosis and outlines the standard components of the fertility evaluation for women.

This definition is a starting point, not a rigid gate. It is intended to guide when to seek evaluation, not to suggest that nothing matters before that point. If you already know about a condition that affects fertility — such as polycystic ovary syndrome, endometriosis, uterine fibroids, or a prior pelvic infection — a conversation with a specialist is appropriate sooner.

When should you seek evaluation earlier than 12 months?

Evaluation is appropriate at any point — or before you start trying — if:

• You are 40 or older
• You have irregular or absent menstrual cycles
• You have a known or suspected diagnosis of PCOS, endometriosis, or uterine fibroids 1Ref 1Practice Committee of the American Society for Reproductive Medicine (2021).Fertility evaluation of infertile women: a committee opinion.Defines the 12-month (6-month for women ≥35) threshold for infertility diagnosis and outlines the standard components of the fertility evaluation for women
• You have a history of pelvic inflammatory disease, chlamydia, or gonorrhea (which can damage the fallopian tubes)
• You have had more than one miscarriage
• You or your partner have had prior fertility treatment that did not result in pregnancy
• Your partner has a known semen abnormality 2Ref 2Schlegel PN, Sigman M, Collura B, De Jonge CJ, Eisenberg ML, Lamb DJ, Mulhall JP, Niederberger C, Sandlow JI, Sokol RZ, Spandorfer SD, Tanrikut C, Treadwell JR, Oristaglio JT, Zini A (2021).Diagnosis and Treatment of Infertility in Men: AUA/ASRM Guideline Part I.Supports the recommendation that semen analysis is a central component of the fertility evaluation and that male-factor assessment should occur simultaneously with female evaluation
• You have had surgery on your ovaries or uterus
• You have received chemotherapy or radiation

If there is any reason to think time matters for you, bring it up with your clinician or Gale and get a referral. Waiting a full 12 months is not a requirement when relevant history is present.

What does a fertility evaluation actually involve?

A first visit to a reproductive endocrinologist is mostly conversation and planning. A standard evaluation for a couple typically includes 1Ref 1Practice Committee of the American Society for Reproductive Medicine (2021).Fertility evaluation of infertile women: a committee opinion.Defines the 12-month (6-month for women ≥35) threshold for infertility diagnosis and outlines the standard components of the fertility evaluation for women2Ref 2Schlegel PN, Sigman M, Collura B, De Jonge CJ, Eisenberg ML, Lamb DJ, Mulhall JP, Niederberger C, Sandlow JI, Sokol RZ, Spandorfer SD, Tanrikut C, Treadwell JR, Oristaglio JT, Zini A (2021).Diagnosis and Treatment of Infertility in Men: AUA/ASRM Guideline Part I.Supports the recommendation that semen analysis is a central component of the fertility evaluation and that male-factor assessment should occur simultaneously with female evaluation:

For the person with ovaries: - Medical and menstrual history - Hormone testing (FSH, LH, estradiol, AMH) to assess ovarian reserve - Pelvic ultrasound to count antral follicles and check the uterus and ovaries - Evaluation of the uterine cavity and fallopian tubes, often by HSG or sonohysterogram - Screening for thyroid abnormalities and prolactin levels, which can affect ovulation

For the person with testes: - A semen analysis is the central test — it assesses sperm count, motility (movement), and morphology (shape) - This is typically the first test ordered because it is non-invasive and informative 2Ref 2Schlegel PN, Sigman M, Collura B, De Jonge CJ, Eisenberg ML, Lamb DJ, Mulhall JP, Niederberger C, Sandlow JI, Sokol RZ, Spandorfer SD, Tanrikut C, Treadwell JR, Oristaglio JT, Zini A (2021).Diagnosis and Treatment of Infertility in Men: AUA/ASRM Guideline Part I.Supports the recommendation that semen analysis is a central component of the fertility evaluation and that male-factor assessment should occur simultaneously with female evaluation

Results from both partners guide the conversation about next steps. Many couples receive a clear explanation at this point; others are diagnosed with unexplained infertility, meaning no single cause is found but evidence-based treatment paths still exist 3Ref 3Practice Committee of the American Society for Reproductive Medicine (2020).Evidence-based treatments for couples with unexplained infertility: a guideline.Outlines evidence-based treatment options for couples with unexplained infertility, including ovulation stimulation with IUI and IVF.

Who is a reproductive endocrinologist, and how do I find one?

A reproductive endocrinologist (RE) is a board-certified obstetrician-gynecologist who completed additional fellowship training in the hormonal and structural causes of infertility and in assisted reproductive technologies. REs work in dedicated fertility centers and in academic medical centers.

You can ask your primary care clinician or gynecologist for a referral, or search the Society for Assisted Reproductive Technology (SART) or American Society for Reproductive Medicine (ASRM) websites for member clinics near you. Gale can also help you identify next steps and prepare for your first appointment.

What happens if no cause is found?

Unexplained infertility — where a standard evaluation does not identify a clear cause — is a recognized clinical diagnosis, not a dead end. Evidence-based treatment options exist and include ovulation stimulation (sometimes with IUI), and IVF 3Ref 3Practice Committee of the American Society for Reproductive Medicine (2020).Evidence-based treatments for couples with unexplained infertility: a guideline.Outlines evidence-based treatment options for couples with unexplained infertility, including ovulation stimulation with IUI and IVF. A reproductive endocrinologist can walk you through the realistic success rates for your specific situation, which depends heavily on age and individual factors.