What hormonal workup should be performed for a couple married for 6 years who are experiencing subfertility?

Hormonal Workup for Subfertility After 6 Years of Marriage

For this couple with 6 years of subfertility, obtain FSH and testosterone in the male partner, and FSH, LH, estradiol, and day 21 progesterone in the female partner as the initial hormonal assessment.

Male Partner Hormonal Evaluation

The male partner requires hormonal testing given the prolonged duration of subfertility. Clinicians should obtain FSH and total testosterone as the minimum initial endocrine evaluation 1. This is particularly important because:

• Male factor contributes to 26-40% of infertility cases 2, 3
• Hormonal evaluation identifies treatable causes of male infertility 4
• These tests should be performed when oligozoospermia is present or suspected 1

If Initial Male Testing is Abnormal:

If testosterone is low, proceed with:

• Repeat total testosterone measurement (preferably morning sample)
• Free or bioavailable testosterone
• LH level
• Prolactin level 4

This distinguishes between:

• Hypogonadotropic hypogonadism (low FSH, low LH, low testosterone) - highly treatable with gonadotropins 5, 6
• Primary testicular failure (elevated FSH, elevated LH, low testosterone) - requires assisted reproductive technology 1

Female Partner Hormonal Evaluation

The female partner's age is critical here - if she is >35 years, this evaluation becomes even more urgent 3.

Essential Female Hormonal Tests:

1. Day 21 progesterone (or 7 days before expected menses):

   • Confirms ovulation
   • Level >30 nmol/L supports ovulation 5
   • Regular cycles (21-35 days) suggest ovulation but require confirmation

2. FSH and LH (early follicular phase, days 2-5):

   • Elevated FSH suggests diminished ovarian reserve or premature ovarian insufficiency
   • FSH:LH ratio helps diagnose PCOS (though not definitive)

3. Estradiol (early follicular phase):

   • Assesses ovarian function
   • Helps interpret FSH levels (elevated estradiol can suppress FSH artificially)

Additional Testing Based on Clinical Presentation:

If anovulation or irregular cycles are present:

• Testosterone and DHEA-S (to assess for hyperandrogenism in PCOS) 5
• Prolactin (if galactorrhea or irregular menses)
• TSH (thyroid dysfunction affects ovulation)

If signs of PCOS (irregular cycles, hirsutism, acne):

• The hormonal workup supports but doesn't diagnose PCOS
• Requires clinical hyperandrogenism OR biochemical hyperandrogenism PLUS ovulatory dysfunction or polycystic ovarian morphology on ultrasound 2

Critical Timing Considerations

After 6 years of subfertility, this couple has exceeded the typical 12-month definition significantly 5, 7. This warrants immediate comprehensive evaluation rather than staged testing, as spontaneous pregnancy rates drop dramatically after 48 months of trying 7.

Common Pitfalls to Avoid

• Don't delay hormonal testing: With 6 years of subfertility, both partners need simultaneous evaluation
• Don't order FSH and testosterone in isolation: Abnormal results require follow-up testing to determine the specific etiology
• Don't forget timing: Female hormonal tests must be obtained at specific cycle days to be interpretable
• Don't assume regular cycles mean normal ovulation: Always confirm with progesterone testing 5

Integration with Complete Workup

While hormonal evaluation is essential, remember that:

• Tubal patency assessment (hysterosalpingography or hysterosonography) is required 2, 3
• Semen analysis (two samples) is mandatory even with normal hormones 1, 8
• Unexplained infertility occurs in 28-30% of couples despite normal testing 2, 3

The hormonal workup identifies the 21% of cases due to ovulatory failure and helps characterize male factor issues, but represents only one component of the complete subfertility evaluation 2.