theblood membership
Your period is a blood sample.
Period blood carries information a standard blood draw can’t give you. Join the first generation learning what it can reveal about energy, fertility and hormones, starting today with expert Deep Dives and a private community.
Founding Membership + your first test kit
€99 €69
for the first 1,000 members
€69 today · Full refund until your first kit ships · Not a medical diagnosis
The science
Why period blood?
Period blood is the only blood sample that comes from your uterus. Endometrial cells, immune cells, proteins and signaling molecules, in one sample. Information a standard blood draw can’t give you.
And your body makes it fresh every month. No needle, no doctor’s appointment. So you can follow your health over time, not just once.
What we plan to measure – We start with HbA1c for energy and blood sugar, followed by AMH for fertility and FSH for your cycle and peri-/menopause, subject to validation and certification.
Published research
A first study with the University of Rostock showed that vitamins A and D can be measured in menstrual blood.
Validation partner
Our method for collecting samples at home is being validated together with SGS.
What’s included
Your membership starts the day you join.
Monthly Deep Dives – One theme a month, with a live workshop and Q&A with women’s health experts. Missed one? Every session is recorded.
Founder Sessions – Hear directly from the founders about the science, the product and what we’re building next.
Private community – Ask questions and connect with other members in our WhatsApp community.
Cycle tracking – Track your cycle, pain and bleeding in the theblood app.
Take part in research – Apply for voluntary studies. Selected studies offer compensation of up to €250.
How it works
How the test will work – from April 2027
1 Collect
Collect your sample at home with a menstrual cup. Use your own or get one from us.
2 Send
Mail your sample to the lab.
3 See
Your results and their context in the theblood app.
Every 3 months you get a new kit. We start with HbA1c (your long-term blood sugar), followed by AMH (linked to your ovarian reserve) and FSH (a key hormone of your cycle and fertility), subject to validation and certification. First kits ship from April 2027, starting in Germany.
Coming up
Upcoming Deep Dives
One theme a month, with a live workshop that goes deeper.
November
Is your period normal?
Cycle length, flow, color and pain
December
Red flag?
Warning signs and when to see a doctor
January
Is your diet working against your cycle?
Food, energy and blood sugar
February
Did you know you have a second age: your ovaries?
Why ovarian aging is not fixed
March
Could your symptoms point to something more?
Endometriosis and PCOS
April
What's your unique period signature?
Take the quiz
Timeline
What happens when
Cancel before your first kit ships and you get a full refund.
Today
Pay €69. Your membership starts right away: Deep Dives, Founder Sessions and the community.
From April 2027
Your first test kit ships, starting in Germany. Other countries follow once approved.
3 months after your kit ships
Your next payment of €69, then €69 every 3 months with a new kit.
FAQ
Questions
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Expected from April 2027, starting in Germany. Other countries follow as regulatory approval allows. Your membership benefits start right away.
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Because your membership starts today: monthly expert Deep Dives, live sessions and the community, all included. You also lock in the founding price of €69 instead of €99 for as long as you stay. Your first test kit ships once it is approved and available in your country. Cancel before it ships and you get a full refund.
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Then you don’t pay again until your first kit ships. Your membership benefits continue, and you can cancel anytime before your kit ships for a full refund.
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Yes. Membership, community and Deep Dives are open worldwide. Your test kit follows once it is approved and available in your country, and you won’t be charged again until it ships.
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Every 3 months you get a new test kit, and each one is planned to add a new biomarker, subject to validation and certification. We start with HbA1c (your long-term blood sugar), followed by AMH (linked to your ovarian reserve) and FSH (a key hormone of your cycle and fertility). More markers follow. The order may change depending on how long each certification takes.
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Yes, you collect your sample with a menstrual cup. It is not included in the kit. You can use your own or buy one from us separately.
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You pay €69 today. Your next payment of €69 is due 3 months after your first kit ships, then €69 every 3 months with a new kit.
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Yes, anytime. If you cancel before your first kit ships, you get a full refund.
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Your data belongs to you. We process it in accordance with the GDPR, store it on servers in the EU and only use it for research if you have given explicit consent.
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Every session is recorded and available in your member area. Join live if you want to ask the experts your own questions.
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No. The test gives you insights into your health data that you can discuss with your doctor. It does not diagnose.
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Yes. As one of the first 1,000 members you keep €69 instead of €99 for as long as you stay a member.
First 1,000 members
Be part of the first generation.
Join today and learn from experts from day one.
€69 today · Full refund until your first kit ships