Men's fertility health, finally built for men.
Private at-home testing with expert guidance, from your phone.
Built for men who want to understand their fertility and reproductive health before there's a problem.
Prelaunch · Early access
couples experience infertility — and male reproductive health is often part of the picture.
Fertility health has ignored men for too long.
Nearly 1 in 5 couples experience infertility. Male factors contribute to a significant portion of infertility cases, yet fertility care has traditionally begun with the female partner, so men are often evaluated later in the journey.
Source: U.S. Centers for Disease Control and Prevention (CDC), National Survey of Family Growth.
Male factor infertility describes situations where sperm production, sperm function, hormones, anatomy, genetics, lifestyle, or other aspects of male health may contribute to difficulty conceiving.
Fertility is a shared journey, not one person's responsibility. Assessing male reproductive health early gives couples a fuller picture sooner and makes the right next steps easier to identify.
Kouros starts where men have been underserved the longest — fertility — and builds an ongoing health relationship from there: hormones, lifestyle, sexual health, and future family planning, approached proactively rather than after something goes wrong.
Start Your AssessmentWe don't just give you numbers. We help you understand what to do next.
Understand. Test. Interpret. Act. Test privately from home, understand your results with expert support, and keep monitoring over time.
Tell us about yourself
Complete a short fertility and reproductive health assessment so Kouros can understand your goals, health history, and concerns.
Test privately at home
Receive the appropriate private at-home testing based on your needs, beginning with fertility and relevant blood biomarkers where appropriate.
Understand your results
See your results in a simple dashboard with clear explanations of what each metric means and how the results fit together.
Get expert support
Connect with a qualified expert to discuss your results, understand potential next steps, and receive personalized recommendations around additional testing, medical care, lifestyle, or ongoing monitoring.
Expert availability varies by location and plan.
Measure. Monitor. Optimize.
Fertility health is an ongoing relationship, not a one-time transaction. Each cycle gives you a clearer baseline and better next steps than the last.
Measure
Understand your current fertility and reproductive health through private at-home testing and personalized assessments.
Sperm analysis, relevant blood biomarkers, and the context behind them.
Monitor
Track important biomarkers and fertility metrics over time rather than relying on a single snapshot.
Every result becomes a trend you can actually read.
Optimize
Use expert guidance, clinical recommendations, lifestyle interventions, and additional care when appropriate to improve the factors within your control.
Specific next steps for you, not a generic checklist.
Your fertility health is connected to more than sperm.
A comprehensive fertility health assessment looks at multiple signals together. Semen analysis is one important component — not the whole picture. Kouros organizes your results into six connected health categories so you understand how each piece fits.
Sperm Health
Concentration, motility, morphology, total count and related metrics from your at-home semen analysis.
Hormone Health
Relevant reproductive hormones when blood testing is completed, interpreted alongside your semen results.
Lifestyle & Risk Factors
Sleep, exercise, heat exposure, smoking, alcohol, medications and other factors that may relate to reproductive health.
Sexual Health
Relevant symptoms or concerns that may affect reproductive health, reviewed as part of the bigger picture.
Medical History
Prior conditions, surgeries, medications, family history and other clinical considerations that provide context.
Fertility Goals
Timeline, partner journey, preservation goals and family-planning objectives that shape your recommendations.
Because these signals overlap with the rest of your health, a fertility evaluation can sometimes point to something worth a closer look. Kouros looks at the whole person — a semen analysis on its own is not a complete health assessment.
Testing availability and included biomarkers may vary by location and product.
Results interpreted for you, not just reported to you.
Every important metric comes with context: what it is, why it matters, how it's changing, what can influence it, and what you might consider next.
Kouros does not provide automated diagnoses. Anything clinically significant is flagged for review with a qualified clinician.
Sperm and hormone results are largely within reference ranges. One value is worth a conversation with your clinician.
What it is. How many sperm are present in each millilitre of semen.
Why it matters. Concentration is one of several signals that together describe sperm production.
Illustrative example. Reference ranges vary by lab; results are not a diagnosis.
Start where you are
What brought you here?
There's no single reason men come to Kouros. Choose what sounds like you — we'll point you toward the right starting point.
I'm trying to conceive
Understand your fertility health and identify factors that may affect conception.
Start Your AssessmentI want to know where I stand
Establish a baseline before you're actively trying to have children.
Start Your AssessmentI want to preserve my fertility
Understand your current reproductive health and future family-planning options.
Start Your AssessmentI'm concerned about my hormones
Learn whether additional hormonal evaluation may be appropriate.
Learn MoreI'm experiencing sexual health changes
Understand when fertility, hormones, sexual health, or other factors may warrant further evaluation.
Learn MoreNot sure which fits? The short assessment helps you figure out where to start — it doesn't diagnose anything, and you can stop at any time.
Take the assessment
Fertility is a shared journey.
Trying to understand fertility shouldn't fall on one partner alone. Kouros makes it easier for men to participate earlier, understand their reproductive health, and take an active role in the family-building process.
A private at-home assessment means men can contribute useful information from the beginning, rather than late in the process.
Results and their explanations live in one place, so both partners are working from the same facts.
Clear answers replace guesswork, and questions become easier to raise and talk through together.
Arrive with a baseline, your history, and specific questions, so consultations start further along.
Fertility involves both partners. Understanding male reproductive health alongside everything else gives you a fuller view of where you stand, and of the options available to you.
Your assessment and results stay private. You decide what to share, and with whom.
Results are only useful if you know what they mean.
Kouros helps you move from numbers to understanding. Your results are paired with guidance designed to help you understand what matters, what may deserve additional attention, and what your next steps could be.
Your results are reviewed by a qualified member of the Kouros clinical team — not left for you to decode alone.
Plain-language context on what your results may mean for you, your goals, and your timeline.
Guidance on whether further testing could help complete the picture — only when it's likely to be useful.
Help identifying when in-person specialist care may be worth considering, and how to take that step.
Practical, evidence-informed changes around the factors within your control.
Retesting and tracking over time, so you can see whether changes are making a difference.
Clear guidance for navigating the next stage of your fertility journey — on your own or with a partner.
You're never left alone with a lab report.
Start Your AssessmentExpert support is provided by qualified professionals within the Kouros clinical model; specific credentials and availability may vary by service, plan, and location. Kouros does not provide automated diagnoses.
Your fertility health shouldn’t be a one-time test.
Fertility and reproductive health can change over time. Membership is how Kouros stays with you through that: establish a baseline, monitor the metrics that matter, have results reviewed by someone qualified, and do something with what you find.
A structured fertility and reproductive health assessment, so your care starts from your history and goals rather than a blank form.
Private at-home testing where it's appropriate, so gathering information fits around your life instead of a clinic schedule.
Every result in one private place, explained in plain language rather than left as a lab value to decode.
A clinician looks at what your results mean alongside your history, and says plainly where a closer look is warranted.
Guidance shaped by your results — lifestyle, medical follow-up, or additional testing where relevant.
See how your metrics move across tests, so a single reading never has to carry the whole story.
Clear explanations of what each metric measures and what can influence it, written for men new to this.
Somewhere to come back to when your timeline, results, or questions change — not just at checkout.
Where a closer look makes sense, arranging the next test is a conversation you already have the context for.
Scheduled retesting, results tracked in one private place, and guidance on what to change next — so your fertility health is managed over time, not checked once.
Placeholder pricing. Final membership benefits depend on clinical service availability.
Membership is ongoing access and support — not unlimited medical care. Expert availability varies by location and plan.
Common questions
The short answers.
What does testing involve?
Private at-home testing, starting with fertility and relevant blood biomarkers where appropriate. You collect your sample at home and send it to our lab — no clinic visit required.
How private is my information?
Very. Your results live in a private dashboard, your data is never sold, and health answers are never shared with advertising platforms.
When should I test?
Whenever you want a baseline — whether you're trying to conceive now, planning ahead, or simply want to know where you stand. Earlier is almost always more useful.
Does insurance cover Kouros?
Kouros is direct-to-consumer. Depending on your plan and the services recommended, some components may be eligible for coverage or reimbursement — coverage varies, so check with your insurer.
Who is eligible, and is there medical support?
Kouros is for adult men who want to understand their fertility health. Your results come with expert support to help you understand what they mean and what to consider next.
Your future starts with understanding where you are today.
Establish your fertility health baseline, understand your options, and take a proactive next step with expert support.