For him · trimester zero

Get the number. Then move it.

A semen analysis and a full blood panel. At home.

The bit nobody tells men
0%

of couples who struggle have a male factor involved.

And men are still tested last.

Your window
0days

One full cycle of sperm production. Change the inputs now, see it in three months.

01

Find your baseline.

A kit arrives. No waiting room, no clipboard.

Switch on what you want. We'll tell you which tests aren't worth your money.

An open postal test kit: a sample collection card, sealed lancets, capped sample tubes, an alcohol wipe and a return envelope.
Concept image. Kit contents and design not final.
02

A doctor reads it back.

Yours and hers, together. On video.

Doctor
What your numbers mean.

And when you need a urologist, not a supplement.

Dietitian
Turns the panel into food.

Not a stack of pills and a printout.

Counsellor
There if it lands badly.

Included. You don't have to ask twice.

03

Run the plan.

Ranked by your results. Every line graded.

Solid
Weight. Smoking. Booze. Sleep.

Unglamorous, and the strongest evidence there is.

Emerging
Heat. Exposures.

Cheap to avoid, evidence still thin.

Noise
Testicle tanning.

Plus "detox" protocols and miracle blends. Skip all of it.

04

Retest at ninety days.

Either the numbers moved or they didn't. Both are useful.

Proof, not vibes.

Who is behind it

A real person,
with her name on it.

Annabelle Body
Founder
  • BSc BiologyUniversity of Exeter
  • MBAHarvard Business School
  • Chartered accountantTrained at Deloitte

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.

Our clinicians and lab accreditations will be named here before the first cohort opens.
The founding list · open now

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The evidence

Everything above, with the receipts.

Male factor is involved about half the time +

In couples who don't conceive, a male factor is involved in roughly half of cases, sometimes as the only cause and often alongside a female factor. It's the most under-tested variable in the process and the cheapest to check. Grade: solid.

Ninety days is one full cycle +

Spermatogenesis takes about 74 days, plus roughly two weeks of maturation in transit. What you change today shows up in a sample about three months from now. Slow enough to need patience, fast enough to prove something. Grade: solid.

What the WHO reference limits really are +

The sixth-edition manual puts the lower reference limit at 16 million/mL concentration, 42% total motility and 4% normal forms. These are the fifth percentile of men whose partners conceived within a year: a floor, not a pass mark. Below one is a reason to look closer; above them all guarantees nothing.

Source: WHO laboratory manual for the examination and processing of human semen, 6th ed. (2021). Grade: solid.

Sperm quality tracks with how long men live +

In more than 78,000 men followed for up to fifty years, those with the highest total motile sperm counts lived around 2.7 years longer than those with the lowest. That's an association, not a promise. Healthier men have better sperm and also live longer.

Source: Priskorn et al., Human Reproduction, 2025. Grade: emerging.

The sperm-decline headline, honestly +

Meta-analyses report roughly a 50% fall in average Western sperm counts since the 1970s. The finding is real in the data and genuinely argued over: methods, study selection, and what it means for any individual. Which is the argument for measuring your own number rather than reacting to an average.

Source: Levine, Swan et al., Hum. Reprod. Update. Grade: contested.

One low result is not a diagnosis +

Samples vary a lot between days. Illness, a fever, a rough stretch of sleep or drinking all show up. A single low reading usually warrants a repeat test and a doctor's read. These are screening tests: they show where you stand, they don't diagnose infertility.

Do I have to do this as a couple? +

It works better that way, because one doctor reading both sets of results catches things separate appointments miss. But plenty of men start on their own, and there's a full page for her when she's ready.

Send her the other one
GET YOUR BASELINE