Fertility testing ranges from simple at-home tracking methods to blood work and imaging done at a clinic. The right starting point depends on your age, how long you’ve been trying to conceive, and whether you have a uterus or produce sperm, since the tests differ significantly. Most people can begin gathering useful information on their own before ever seeing a specialist.
Professional guidelines recommend seeking a formal fertility evaluation after 12 months of unprotected intercourse if you’re under 35, and after 6 months if you’re 35 or older. If you’re over 40, earlier evaluation is reasonable. But you don’t need to wait for those timelines to start learning about your body.
Tracking Ovulation at Home
Two widely used methods can help confirm whether and when you’re ovulating: ovulation predictor kits (OPKs) and basal body temperature (BBT) charting. They measure different things at different times, and using both together gives you the most complete picture.
Ovulation predictor kits are urine strips that detect a surge in luteinizing hormone, which spikes roughly 16 to 48 hours before an egg is released. A positive result tells you ovulation is approaching, giving you a short window to time intercourse. These kits are available at any pharmacy and are straightforward to use, though the timing of the surge can vary from cycle to cycle.
Basal body temperature charting works differently. Your resting temperature dips slightly just before ovulation, then rises sharply within 24 hours of the egg’s release and stays elevated for several days. The catch is that BBT only confirms ovulation after it’s already happened. It takes two to three months of consistent daily tracking, first thing every morning before getting out of bed, to identify a reliable pattern. Over time, though, BBT data can reveal whether you’re ovulating consistently and how long your luteal phase lasts, both of which matter for conception.
If you’re tracking cycles and seeing no temperature shift, no positive OPK results, or highly irregular periods, that’s useful information to bring to a provider.
Blood Tests for Ovarian Reserve
When you visit a fertility clinic or reproductive endocrinologist, one of the first steps is blood work. For people with ovaries, several hormone levels paint a picture of ovarian reserve, which is essentially an estimate of how many eggs remain and how your ovaries are responding to reproductive signals.
The most common blood tests are drawn on day 3 of your menstrual cycle (counting the first day of your period as day 1):
- FSH (follicle-stimulating hormone): This hormone tells your ovaries to develop an egg each cycle. When ovarian reserve is declining, your body pumps out more FSH to compensate, so higher day-3 levels suggest fewer remaining eggs.
- Estradiol: Measured alongside FSH, elevated day-3 estradiol can mask a high FSH reading and independently signals reduced fertility potential.
- AMH (anti-Müllerian hormone): Produced by small follicles in the ovaries, AMH gives a snapshot of your remaining egg supply. Unlike FSH, it can be drawn on any day of your cycle. Lower levels suggest lower ovarian reserve.
It’s worth knowing that “normal” ranges vary between labs, which makes it difficult to compare results from different facilities. Your doctor will interpret your numbers in context, factoring in your age and other findings rather than relying on any single value.
Women with elevated day-3 FSH or estradiol levels are less likely to conceive through ovulation-inducing medications or IVF compared to women of the same age with normal levels. These results don’t mean pregnancy is impossible, but they help guide treatment decisions.
Antral Follicle Count
Alongside blood work, a transvaginal ultrasound early in your cycle can count the small resting follicles visible on each ovary. This is called an antral follicle count (AFC), and it serves as another measure of ovarian reserve. Research has shown that an AFC of 11 or more is a strong positive predictor of live birth in IVF cycles. A lower count doesn’t disqualify anyone from treatment, but it helps clinicians counsel you realistically and choose appropriate medication doses.
The ultrasound itself takes only a few minutes and isn’t painful, though it can be mildly uncomfortable. Combined with AMH and FSH results, the AFC gives your doctor a fairly comprehensive view of your ovarian reserve.
Checking the Fallopian Tubes and Uterus
Even with good hormone levels and regular ovulation, physical blockages can prevent conception. Two common imaging tests evaluate the uterus and fallopian tubes for problems like fibroids, polyps, scar tissue, or blocked tubes.
A hysterosalpingogram (HSG) involves injecting a contrast dye through the cervix while X-rays track its path through the uterus, into the fallopian tubes, and out the other side. If the dye flows freely, the tubes are open. If it stops or pools, that suggests a blockage. The procedure takes about 15 to 30 minutes and can cause cramping similar to menstrual cramps.
A sonohysterogram (SHG) uses saline instead of dye, with a vaginal ultrasound providing real-time images of the uterine lining. This is particularly good at spotting fibroids, polyps, or scar tissue that could interfere with embryo implantation. If tube evaluation is also needed during the same appointment, a technique called FemVue pushes small bubbles through the catheter to see whether they spill out the ends of the tubes, confirming they’re open.
Both tests are done in a clinic, not a hospital, and most people return to normal activities the same day.
Semen Analysis for Male Fertility
Male factors contribute to roughly half of all infertility cases, so testing both partners matters. A semen analysis is the primary screening tool and is typically one of the first tests ordered because it’s simple and noninvasive.
A sample is collected (usually through masturbation at the clinic or at home with a provided container) and evaluated in a lab. The World Health Organization’s 2021 reference limits define the lower bounds of normal:
- Sperm concentration: at least 16 million per milliliter
- Total motility: at least 42% of sperm moving (including both progressive and non-progressive movement)
- Normal morphology: at least 4% of sperm with typical shape
These are lower reference limits, not targets. Falling below one value doesn’t necessarily mean you can’t conceive, but it identifies areas that may need attention. Sperm production takes about 72 days, so factors like illness, heat exposure, or medication use in the previous two to three months can temporarily affect results. A repeat analysis is often recommended if the first comes back abnormal.
Genetic Carrier Screening
Carrier screening is a separate category from the tests above. It doesn’t measure your ability to conceive but identifies whether you carry gene variants that could cause serious conditions in a child. You can be a carrier without having any symptoms yourself.
The American College of Obstetricians and Gynecologists recommends that all women considering pregnancy or currently pregnant be offered screening for cystic fibrosis and spinal muscular atrophy. A blood test for hemoglobin disorders is also standard. Many clinics now offer expanded carrier panels that screen for dozens or even hundreds of conditions at once.
If both partners carry a variant for the same recessive condition, each pregnancy has a 25% chance of the child being affected. Knowing this before conception opens up options, including IVF with genetic testing of embryos, use of donor gametes, or simply being prepared.
What the Results Actually Tell You
No single fertility test gives a definitive yes or no. Ovarian reserve testing estimates your egg supply but can’t measure egg quality, which declines with age regardless of hormone levels. A normal semen analysis doesn’t rule out subtle sperm DNA issues. Open tubes don’t guarantee they’re functioning well enough to capture an egg.
What testing does well is identify correctable problems, like a blocked tube, a uterine polyp, or low sperm motility, and flag situations where time matters more than usual. A low AMH at 33 carries different implications than the same level at 28, and your provider will weigh all your results together rather than reacting to one number in isolation.
If you’re not yet ready to conceive but want a baseline, many clinics offer “fertility awareness” panels that include AMH, FSH, and an antral follicle count. These won’t predict exactly how many fertile years you have left, but they can catch early signs of diminished reserve that might change your timeline.