Structures infertility workup with ovarian reserve testing, semen analysis, and treatment algorithms. Use when evaluating infertility, ordering fertility workup, or managing reproductive planning.
Structures infertility workup with ovarian reserve testing, semen analysis, tubal assessment, and stepped treatment algorithms per ASRM and ACOG Practice Bulletin No. 217.
Infertility — defined as failure to conceive after 12 months of unprotected intercourse (or 6 months if female partner is ≥ 35) — affects approximately 12–15% of couples. The American Society for Reproductive Medicine (ASRM) recommends a systematic, simultaneous evaluation of both partners, as male factor contributes to approximately 40–50% of infertility cases (sole male factor ~20%, combined male + female ~20–30%). Delays in evaluation lead to age-related decline in ovarian reserve, diminishing treatment success.
ACOG Practice Bulletin No. 217 (Infertility Workup for the Women's Health Specialist) outlines the standard evaluation components. This skill ensures a complete, concurrent evaluation of ovulatory function, tubal patency, uterine anatomy, ovarian reserve, and male factor — then maps findings to the appropriate treatment tier.
Ovulatory dysfunction accounts for approximately 25–30% of female infertility.
| Assessment Method | Timing | Interpretation |
|---|---|---|
| Menstrual history | Ongoing | Regular 24–35 day cycles strongly suggest ovulation |
| Basal body temperature (BBT) | Daily | Biphasic pattern (0.2–0.5°C rise) confirms ovulation retrospectively |
| Urine LH surge (OPK) | Mid-cycle | Positive predicts ovulation in ~24–36 hours |
| Mid-luteal progesterone | Day 21 (or 7 days post-expected ovulation) | > 3 ng/mL confirms ovulation |
| Endometrial biopsy | Luteal phase | No longer routinely recommended for dating; useful if endometrial pathology suspected |
| Condition | Testing | Findings |
|---|---|---|
| PCOS | Rotterdam criteria: 2 of 3 — oligo/anovulation, clinical/biochemical hyperandrogenism, polycystic ovarian morphology on US | Elevated free testosterone, DHEA-S; LH:FSH ratio > 2:1 (supportive but not required) |
| Hypothalamic amenorrhea | FSH, LH, estradiol | Low/normal FSH, low LH, low estradiol |
| Hyperprolactinemia | Prolactin | > 25 ng/mL — repeat; if persistent, consider MRI pituitary |
| Thyroid dysfunction | TSH | Abnormal TSH → treat before fertility intervention |
| Premature ovarian insufficiency | FSH, AMH, estradiol | FSH > 40 IU/L (× 2 samples), low AMH, low estradiol |
Ovarian reserve predicts the quantity (not quality) of remaining oocytes and guides treatment intensity.
| Test | Timing | Normal Values | Interpretation |
|---|---|---|---|
| AMH (anti-Müllerian hormone) | Any cycle day | 1.0–3.5 ng/mL | < 1.0 = diminished reserve; > 3.5 = possible PCOS |
| Day 3 FSH | Cycle day 2–4 | < 10 IU/L | > 10 = diminished reserve; > 15 = poor prognosis |
| Day 3 estradiol | Cycle day 2–4 | < 80 pg/mL | Elevated E2 with normal FSH may mask diminished reserve |
| Antral follicle count (AFC) | Cycle day 2–5 (TVUS) | 10–20 total | < 5–7 = diminished reserve; > 20 = high responder / PCOS risk |
Combine AMH + AFC for the most accurate reserve assessment. Document results with age-adjusted interpretation.
| Test | What It Assesses | Findings |
|---|---|---|
| Hysterosalpingogram (HSG) | Tubal patency, uterine cavity contour | Bilateral spill = patent tubes; filling defects = polyps/fibroids/synechiae; proximal vs. distal tubal occlusion |
| Saline infusion sonohysterogram (SIS) | Uterine cavity detail | Polyps, submucosal fibroids, Asherman syndrome |
| Hysteroscopy | Direct cavity visualization | Gold standard for intracavitary pathology — see and treat |
| Laparoscopy with chromopertubation | Tubal patency + peritoneal disease | Reserve for suspected endometriosis, PID, or equivocal HSG |
Uterine anomalies affecting fertility:
Semen analysis is the cornerstone of male factor assessment. Per WHO 6th edition (2021) reference values:
| Parameter | Lower Reference Limit (5th percentile) |
|---|---|
| Volume | ≥ 1.4 mL |
| Sperm concentration | ≥ 16 million/mL |
| Total sperm count | ≥ 39 million per ejaculate |
| Progressive motility | ≥ 30% |
| Total motility | ≥ 42% |
| Normal morphology (strict Kruger) | ≥ 4% |
| Diagnosis | First-Line Treatment | Second-Line | Third-Line |
|---|---|---|---|
| Ovulatory dysfunction (PCOS) | Letrozole 2.5–7.5 mg CD 3–7 (superior to clomiphene per NICHD trial) | Clomiphene 50–150 mg CD 5–9; gonadotropins | IVF |
| Unexplained infertility | Timed intercourse × 3–6 cycles → letrozole/clomiphene + IUI × 3 | Gonadotropins + IUI (up to 3 cycles) | IVF |
| Tubal factor (bilateral occlusion) | IVF (bypass tubal disease) | Tubal surgery (selected cases with mild distal disease) | — |
| Male factor (mild-moderate) | IUI with sperm wash (requires ≥ 5–10 million TMSC) | IVF | IVF-ICSI |
| Male factor (severe / azoospermia) | IVF-ICSI with TESE/micro-TESE if needed | Donor sperm | — |
| Diminished ovarian reserve | Aggressive stimulation → IVF | Donor oocytes | — |
| Endometriosis | Surgical excision + spontaneous attempt × 6 months | IUI with controlled stimulation | IVF |