Fertility Testing: A Complete Guide to Understanding Your Fertility Workup

If you've been trying to conceive without success, or if you're simply curious about your reproductive health before starting your family journey, fertility testing provides crucial insights into what's happening inside your body. Understanding which tests exist, what they measure, and how to interpret the results is empowering — and for many couples, it's the first step toward a solution. This guide covers the full spectrum of fertility testing for both women and men, helping you navigate the process with confidence.

When Should You Consider Fertility Testing?

The conventional medical guideline is to seek fertility evaluation after:

• 12 months of regular, unprotected intercourse without conception (for women under 35)
• 6 months if the female partner is 35 or older
• Immediately if you have known risk factors: irregular periods, previous STI, history of pelvic surgery, endometriosis, PCOS, known male factor concerns, or two or more miscarriages

In Europe, fertility workups are available through public health systems (varying by country) and private fertility clinics. In Germany, Belgium, France, and the Netherlands, initial testing is often partially or fully covered by health insurance for couples meeting certain criteria.

There's no reason to wait if you have concerns or risk factors. Earlier investigation identifies treatable issues sooner and preserves options, particularly for women whose ovarian reserve is declining with age.

Female Fertility Tests: What Gets Measured and Why

A comprehensive female fertility workup covers hormonal function, ovarian reserve, uterine anatomy, and fallopian tube patency. Here's what each test reveals:

Day 2-3 Hormone Panel

Blood tests drawn on days 2 or 3 of the menstrual cycle (with day 1 being the first day of full flow) measure baseline hormone levels that reflect ovarian function:

• FSH (follicle-stimulating hormone) — elevated FSH indicates reduced ovarian reserve; the pituitary is working harder to stimulate the ovaries. Normal: below 10 IU/L
• LH (luteinising hormone) — elevated on day 3 may indicate PCOS; LH:FSH ratio above 2:1 is a classic PCOS marker
• Oestradiol (E2) — high E2 on day 3 can artificially suppress FSH, masking elevated levels; important for interpreting FSH correctly
• AMH (anti-Müllerian hormone) — can be measured any day of cycle; reflects ovarian reserve and the pool of remaining follicles

AMH Testing: The Gold Standard for Ovarian Reserve

Anti-Müllerian hormone (AMH) is produced by granulosa cells in small antral follicles and directly reflects the size of your remaining egg supply. It's the most reliable single marker of ovarian reserve available, and unlike FSH, it remains stable across the menstrual cycle and doesn't vary much cycle to cycle.

AMH interpretation:

• Above 14.28 pmol/L (2 ng/mL) — good ovarian reserve
• 7.14-14.28 pmol/L (1-2 ng/mL) — satisfactory reserve
• 2.86-7.14 pmol/L (0.4-1 ng/mL) — low-normal reserve
• Below 2.86 pmol/L (0.4 ng/mL) — low reserve, may require more urgent fertility support

A low AMH means fewer eggs, not necessarily poor egg quality — though the two often correlate with age. AMH testing is available privately across Europe and is increasingly offered as a standard investigation before IVF.

Mid-Luteal Progesterone (Day 21 Test)

Progesterone rises sharply after ovulation, reaching its peak 7 days after the LH surge — typically around day 21 in a 28-day cycle. A progesterone level above 30 nmol/L (9.5 ng/mL) confirms that ovulation has occurred that cycle. Low mid-luteal progesterone may indicate anovulation, poor corpus luteum function, or luteal phase defect — all treatable causes of infertility.

For women with irregular cycles, the test should be timed 7 days after the LH surge (not automatically on day 21).

Thyroid Function Tests

TSH (thyroid-stimulating hormone) and free T4 should be checked in all women being investigated for infertility. Hypothyroidism (underactive thyroid) is strongly associated with ovulatory dysfunction, increased miscarriage risk, and poor pregnancy outcomes. TSH above 2.5 mIU/L before conception is associated with reduced fertility and increased miscarriage risk — a target below 2.5 is recommended for women TTC.

Prolactin

Elevated prolactin (hyperprolactinaemia) inhibits ovulation and can cause irregular or absent periods. It's measured fasting and in a calm state (stress elevates prolactin). If elevated, a repeat test and potentially an MRI of the pituitary is warranted to rule out a prolactinoma (usually a benign tumour that responds well to medication).

Antral Follicle Count (AFC)

A transvaginal ultrasound on days 2-4 of the cycle allows the sonographer to count the number of visible small follicles (antral follicles) in both ovaries. This provides a direct visual estimate of ovarian reserve, correlates with AMH, and helps predict IVF response. AFC below 5-7 total follicles is considered low; 10-15+ is considered normal.

Pelvic and Uterine Assessment

Transvaginal ultrasound (TVUS) evaluates the uterus for fibroids, polyps, adenomyosis, and structural abnormalities that can impair implantation. It also assesses the ovaries for polycystic appearance (volume and follicle distribution characteristic of PCOS) and endometriomas (chocolate cysts indicating endometriosis).

If the TVUS suggests uterine abnormalities, a sonohysterogram (SHG) — ultrasound with saline infusion — or hysteroscopy may be recommended for definitive assessment and possible treatment.

Tubal Patency Testing

Fallopian tube blockage prevents sperm from reaching the egg and is often caused by pelvic inflammatory disease (PID), previous STI (especially chlamydia), endometriosis, or previous abdominal surgery. Testing methods include:

• HyCoSy (hysterosalpingo-contrast sonography) — ultrasound-guided assessment of tubal patency; preferred first-line test
• HSG (hysterosalpingogram) — X-ray contrast dye study; widely used, slightly higher radiation exposure
• Laparoscopy with dye test — gold standard for tubal assessment; invasive, usually reserved for women with suspected endometriosis or tubal disease

Male Fertility Testing: Semen Analysis and Beyond

Male factor infertility contributes to approximately 40-50% of all infertility cases — a statistic that is still under-recognised. A full male fertility workup should be part of any couple's investigation from the start, not an afterthought.

Semen Analysis: The Foundation

A semen analysis (SA) measures the key parameters of sperm health. It should be performed after 2-5 days of abstinence, ideally produced on-site at the laboratory or transported within 1 hour at body temperature.

WHO 2021 reference values for a normal semen analysis:

• Volume: ≥1.4 mL
• Concentration: ≥16 million sperm per mL
• Total motility: ≥42%
• Progressive motility: ≥30%
• Morphology (Kruger strict criteria): ≥4% normal forms

A single abnormal semen analysis should be repeated after 3 months, as sperm parameters fluctuate significantly. Many men who have an initially abnormal SA produce a normal result on repeat testing after optimising nutrition and lifestyle.

Sperm DNA Fragmentation Testing

Standard semen analysis doesn't assess sperm DNA integrity. High sperm DNA fragmentation (SDF) — where a significant proportion of sperm carry damaged genetic material — is associated with fertilisation failure, poor embryo development, implantation failure, and recurrent miscarriage, even when routine semen parameters appear normal.

DFI (DNA Fragmentation Index) testing (TUNEL, SCSA, or SCD tests) is recommended for:

• Couples with unexplained infertility
• Recurrent miscarriage (2+ losses)
• Repeated IVF failure
• Borderline semen parameters
• Older male partners (over 40)

The good news: SDF can often be significantly reduced through 3 months of antioxidant supplementation, smoking cessation, alcohol reduction, and heat avoidance.

Hormonal Testing for Men

If semen analysis shows severe abnormalities (particularly very low concentration or complete absence of sperm), hormonal testing helps identify the cause:

• FSH and LH — assess pituitary drive to the testes; high FSH with low sperm count may indicate testicular failure
• Testosterone — low testosterone can impair spermatogenesis
• Prolactin — elevated prolactin in men reduces testosterone and sperm production

Genetic Testing for Men

For severe male factor infertility (sperm count below 5 million/mL), genetic investigations including karyotype analysis and Y chromosome microdeletion testing help identify chromosomal causes of azoospermia or severe oligospermia — important for counselling about genetic transmission to male children.

Conceive Plus: Supporting Fertility Health While You Investigate

While awaiting fertility test results or preparing for treatment, both partners can take proactive steps to support their reproductive health. Conceive Plus offers a comprehensive supplement range formulated for couples actively trying to conceive — providing the targeted nutrition that supports healthy sperm production, egg quality, hormonal balance, and uterine health.

The Conceive Plus fertility lubricant can also support conception attempts during the investigation period, providing a sperm-safe, pH-balanced environment for natural intercourse. Its unique calcium and magnesium ion formula supports sperm survival and motility — the same ions found in fertile cervical mucus.

Explore the full Conceive Plus range across Europe at conceiveplus.eu.

Interpreting Your Results: What Happens Next

Receiving fertility test results can be overwhelming, particularly if abnormalities are found. Here's a framework for understanding what the results mean and what typically comes next:

Normal Results on All Tests

If all investigations return normal, the diagnosis is "unexplained infertility" — a frustrating designation that actually has several potential causes at the cellular level (sperm DNA, egg quality, embryo development, implantation factors) that standard testing doesn't capture. Treatment options include ovarian stimulation with timed intercourse, IUI (intrauterine insemination), or IVF.

Ovulatory Dysfunction (PCOS, etc.)

If irregular ovulation is identified, treatment options range from lifestyle modification (weight management, inositol supplementation) to ovulation induction medications (letrozole, clomiphene) to injectable gonadotrophins. Most women with ovulatory dysfunction achieve pregnancy with appropriate treatment.

Low Ovarian Reserve

Low AMH or AFC indicates a smaller egg pool, which doesn't mean conception is impossible but may require more time or IVF. It may be recommended to proceed to assisted conception sooner rather than waiting, to preserve the remaining reserve. Egg freezing may also be discussed if the person is not yet ready to try.

Male Factor Infertility

Mild to moderate male factor often responds to lifestyle optimisation and supplementation (antioxidants, zinc, CoQ10) over 3 months. Severe male factor may require ICSI (intracytoplasmic sperm injection) — injecting a single sperm directly into an egg during IVF. Very severe cases (azoospermia) may require surgical sperm retrieval.

Frequently Asked Questions About Fertility Testing

How accurate is AMH testing?

AMH is one of the most reliable markers of ovarian reserve available. It has low cycle-to-cycle variability and can be tested any day of the cycle. However, it reflects quantity not quality — a high AMH doesn't guarantee healthy eggs, and a low AMH doesn't mean pregnancy is impossible. It's one piece of a larger picture.

Can I improve my fertility test results?

Many fertility markers can be improved with targeted interventions. Sperm parameters (motility, morphology, concentration) respond to 3 months of lifestyle and supplement changes. FSH and AMH are harder to change significantly, but overall health optimisation, stress reduction, and targeted nutrition can positively influence the hormonal environment for reproduction.

Is fertility testing painful?

Blood tests are minimally invasive. Transvaginal ultrasound is typically painless for most women, though mildly uncomfortable. HyCoSy can cause period-like cramping. HSG causes cramping that varies from mild to significant. Taking an over-the-counter pain reliever beforehand and having a plan for rest afterwards helps.

How much does private fertility testing cost in Europe?

Costs vary significantly by country. A comprehensive private workup including hormonal panel, AMH, ultrasound, and semen analysis typically ranges from €400-€1200 in Western Europe. Many private fertility clinics offer package pricing for initial workups. Some tests may be covered through national health systems with a GP referral.

Can stress affect fertility test results?

Acute stress (during the test itself) can temporarily elevate prolactin and cortisol. FSH, LH, and AMH are not significantly affected by day-of stress. Chronic stress can affect cycle regularity and ovulation, which will influence test timing. Discuss any ongoing stress with your doctor when interpreting results.

Do I need to test both partners simultaneously?

Yes — testing both partners simultaneously is the most efficient approach. Around 40% of fertility issues are attributable to male factor alone, and combined male and female factors contribute to another 20%. Investigating only the female partner first delays diagnosis in nearly half of cases.

What is a saline sonogram / sonohysterogram?

A sonohysterogram (SHG) involves injecting saline into the uterine cavity via a thin catheter while performing transvaginal ultrasound. This distends the cavity and makes polyps, fibroids, or uterine septa visible that might not be apparent on standard ultrasound. It's minimally invasive and provides detailed information about the uterine cavity.

Is it worth doing fertility testing before TTC?

Proactive fertility testing (sometimes called "fertility MOT") is increasingly popular, particularly for women over 30 who want to understand their ovarian reserve before deciding to start trying. While it's not routinely recommended by clinical guidelines for asymptomatic women, it can provide valuable information and peace of mind, and can identify issues (like low AMH) that warrant sooner action.

Conclusion: Knowledge Is the First Step

Fertility testing takes away the uncertainty of wondering why conception isn't happening and replaces it with actionable information. Whether the results confirm everything is working well (which is genuinely reassuring) or identify something that needs addressing, the knowledge gained allows you to plan next steps with confidence.

Start the investigation process if you have any concerns or risk factors. Prepare your body now with evidence-based nutrition and targeted supplements. And know that in the majority of cases, identified fertility issues have effective treatments available.

Conceive Plus supports couples across Europe throughout their fertility journey — from natural conception attempts to IVF preparation. Explore the full range at conceiveplus.eu.