Become one of the first women accessing health insights from menstrual blood.
Receive 2 test kits per year, lifetime access to the theblood Pro app, personalized insights into fertility, hormones, PCOS, endometriosis risk, inflammation, and perimenopause, plus early access to future biomarkers and discoveries.
You'll also get exclusive science updates, founder events, and opportunities to participate in research helping shape the future of women's health.
Join the first generation
Access exclusive clinical studies.
Get rewarded up to €250.
Stop guessing. Start understanding.
Your period contains biological information that could help explain what's happening inside your body.
We're unlocking insights into hormones, fertility, PMOS, endometriosis and perimenopause, directly from menstrual blood.
Yet researchers have already identified 350+ potential biomarkers within it. Your period is your 5th vital sign
Be among the first women helping unlock this new frontier
100% Refund Guarantee
100% refundable until we ship. Cancel anytime for a full refund.
Secure Payment
Powered by Stripe.
Ships March 2027
Germany first. More countries to follow in 2027.
What’s included
Exclusive access to research studies
Be first in line for upcoming validation and research studiesOpportunity to receive up to €250
Selected study participants may receive compensation for contributing samples and feedbackFirst access to new discoveries
Get exclusive updates on biomarkers, research findings and scientific breakthroughs before anyone elseDirect access to our scientists and founders
Join live Q&As, ask questions and follow the journey from research to reality.Early access to future tests
Follow our research journey directly from the team building the future of women's health.Help write history
For decades, menstrual blood was overlooked.
Join the first community helping turn it into a new source of health data.
-
Menstrual blood offers real insights into your reproductive health that regular blood testing methods simply cannot provide. With endometrial cells, unique proteins, and more, it provides a snapshot of your uterus without going under the knife! Unlike one-time tests, the Cycle Testkit allows you to track vital health signs from your menstrual blood over time, including the intricate balance of key hormones. This helps you better understand your symptoms, fertility issues, and even changes related to perimenopause, giving you a clearer picture of your health at every stage of life.
-
No more guessing games with your health. Constant fatigue? Sleep issues? Difficulties with conceiving? The Cycle Testkit connects the dots, helping you to understand how your hormones may be impacting your struggles. Finally, gain the clarity you need to make informed decisions for your well-being.
-
Designed to support you at every stage, the Cycle Testkit provides valuable insights into hormonal changes related to fertility and perimenopause. Track fluctuations in key hormones that can affect fertility and identify early indicators of perimenopausal changes—all from the comfort of your home.
Become one of the first women accessing health insights from menstrual blood.
Receive 2 test kits per year, lifetime access to the theblood Pro app, personalized insights into fertility, hormones, PCOS, endometriosis risk, inflammation, and perimenopause, plus early access to future biomarkers and discoveries.
You'll also get exclusive science updates, founder events, and opportunities to participate in research helping shape the future of women's health.
€199 €258 save €59
Join the women who change what's possible.
The data was always there.
Researchers have already identified
350+ potential biomarkers in menstrual blood.
For decades, this information was ignored. We believe it could become one of the most important new sources of health data in women's health.
We're learning how to read it.
By monitoring hormonal shifts over time, the Cycle Testkit helps you build a clearer, more personalized understanding of your health. 2 menstrual blood tests per year, helping you track changes in fertility, hormones, inflammation, PCOS, endometriosis risk, and perimenopause over time.
Help unlock what's next.
As a Founding Member, you'll get early access to discoveries, science updates, clinical studies, and future biomarkers as they become available. You're not just receiving insights.
You're helping build the future of women's health.
Welcome to
the Future of
Women’s Health.
Period Pain isn’t normal.
Experience next-level menstrual healthcare with our cutting-edge menstrual blood test, providing innovative and integrative care you can trust.
Activate
Scan your QR code on the transport container and activate your test.
3. Prepare
Wash your hands and have your test kit ready. Before removing your menstrual cup, take the tube out of the transport container.
2. Menstruate
On the 2nd day of your period, use a menstrual cup.
4. Fill
Remove your cup, pour the blood into the small tube, gently press the cup sides if needed.
5. Send
After filling the sample, please mail it back to us using the provided envelope and shipping label.
Every period,
real answers for your health.
By using the Cycle Testkit, you’re not only gaining valuable insights into your own health but also contributing to advancing women’s healthcare. Menstrual blood—an often overlooked but highly informative biological sample—contains endometrial cells, hormones, and unique proteins that offer crucial information about reproductive and overall health. Traditionally, medical research has been heavily male-focused, leading to significant gaps in understanding the complexities of women’s biology.
theblood is committed to closing the gender data gap by advancing menstrual blood research to monitor hormonal fluctuations, identify early health indicators, and address concerns like fertility and perimenopause. Every Cycle Testkit used helps pave the way for menstrual blood to be recognized as a vital resource in health diagnostics, contributing to a more scientifically informed and equitable future in women’s healthcare
Menstrual Blood as a Vital Health Insight
For all women.
There is still so much to learn from menstrual blood, and we are just at the beginning.
We see our menstrual blood test as the foundational basis for a comprehensive digital health platform that will empower women with personalized health insights and support, whilst generating the data needed to accelerate closure of the gender health gap.
