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Find your baseline.
One kit, posted to you. Bloods, two swabs, and a glucose sensor if you want one.
Switch on what you want. We will tell you which tests are not worth your money.
The egg you release next cycle has been maturing for about ninety days. Test now and you still have time to act on what you find.
Week one you test at home. Week two a doctor takes you through the results. Then you run the plan, and at week twelve you measure again.
It measures egg reserve, and it predicts how you would respond to IVF stimulation. It does not predict natural conception. Among women aged 30 to 44 with no history of infertility, a low result did not lower the chance of conceiving.
Steiner et al., JAMA, 2017. If someone sold you AMH as a deadline, they oversold it.
people experience infertility at some point in their lives. You are not an outlier, and you are not behind.
World Health Organization, 2023.
One kit, posted to you. Bloods, two swabs, and a glucose sensor if you want one.
Switch on what you want. We will tell you which tests are not worth your money.
A doctor, a dietitian and a counsellor. Both of you on the call.
And says when you need a clinic rather than another three months of trying harder.
Ferritin, B12, vitamin D, thyroid, blood sugar. Not a list of superfoods.
Not something held back until things get bad.
Ranked by what your results showed. Every line carries a grade, so you know how much weight to give it.
400 micrograms a day. The neural tube closes at about six weeks, often before you know.
Lactobacillus dominance tracks with better IVF outcomes. Association, not proof.
Along with anyone reading your AMH as a deadline.
Twelve weeks is not an arbitrary number. It is how long these markers take to answer.
Your average blood sugar over roughly three months. The single best read on whether the block worked.
How long levels take to climb once the dose is corrected.
Iron stores move slowly. Worth starting early if yours are low.
Every claim on this site carries a grade, and the grades are published. Where the evidence is thin we say it is thin, including when the stronger claim would sell better.
That is the whole product. A test you can buy anywhere. An honest read of what it means is rarer.
Join and we will send you the one-pager: nine facts about female fertility, each one sourced and graded. One page, no upsell.
Among women aged 30 to 44 with no history of infertility, biomarkers of diminished ovarian reserve, including low AMH, were not associated with a reduced chance of conceiving naturally. AMH tells you about reserve and predicts IVF response. Both are useful. Neither is a fertility score, and it has been sold as one to a great many frightened people.
Steiner et al., JAMA, 2017, consistent with ACOG guidance. Grade: solid.
The final stage of follicle development takes roughly 85 to 90 days, so the window in which your nutrient status, metabolic health and exposures can influence that egg opens about three months before ovulation. Sperm take about the same. That is the whole argument for trimester zero, and it is why we retest at week twelve rather than week four. Grade: solid.
400 micrograms of folic acid daily, started before conception and continued through early pregnancy, substantially reduces the risk of neural tube defects. The neural tube closes at around six weeks of pregnancy, which is often before a pregnancy is confirmed. That timing is the entire reason it has to be early. Grade: solid.
Insulin resistance and PCOS are the most common cause of anovulatory infertility, and metabolic markers are among the most modifiable things you can measure. A glucose and HbA1c read is often more useful than the hormone number everyone talks about. Grade: solid.
A lactobacillus-dominant vaginal community has been associated with better implantation and IVF outcomes, and disruption with worse ones. It is one of the few emerging areas where a test leads to something you can act on. It is also young science: association rather than proof, drawn from observational IVF cohorts. Grade: emerging.
Studies published in 2024 and 2025 detected microplastics in human placenta and follicular fluid. What that does to fertility is not established. Nobody has shown harm at these levels in humans. It justifies reducing avoidable exposure where doing so is cheap and easy. It does not justify the word "detox". Grade: emerging.
Carrier screening is genuinely useful: if you both carry the same recessive condition, that changes the odds for each pregnancy, and it is worth knowing before rather than after. Testing single variants such as MTHFR to personalise a supplement is a different matter. Major medical bodies do not recommend it for this purpose, and anyone building a supplement plan on it is ahead of the evidence. We will offer carrier screening and say so plainly about the rest. Grade: carrier screening solid, variant-led supplementation noise.
UK guidance is to seek clinical help after twelve months of trying, or six months if you are over 36, or sooner if there is a known problem or recurrent loss. Testing sits alongside that, never instead of it. If your results point to something needing investigation, the doctor will say so on the call, and you get a clean export to take to your GP or clinic.
It happens constantly, which is why he has his own page rather than a paragraph on yours. It leads with the numbers, the evidence and the fact that sperm quality tracks with the rest of his health. Send him that page. It works better than arguing.
You are welcome exactly as you are, and nothing here is written in the relentlessly upbeat voice that makes this harder to read. A counsellor is part of the programme from week one. The doctor will be honest about which of these tests is genuinely informative after a loss and which is not, because recurrent loss needs specialist investigation and we would rather point you there than around it.