FertilityMB1NCT07638085
Exploring and Validating Biomarkers in Menstrual Blood
An observational study of Fertility, run by Genie Fertility Ltd at 1 site in United Kingdom.
Trial summary
This study aims to find out whether menstrual blood can provide similar useful biological information to a standard blood sample taken from a vein in the arm as well as uterine biopsies and vaginal swabs. Read more about this study
- Who is it for?
- Ages 18 years and older, women onlyHealthy volunteers can take part
- Conditions the study is for
- Fertility
- How many people
- 100 participants
- Where
- 1 siteUnited Kingdom
- Study dates
- 1 Jul 2026to 30 Apr 2029
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Women only
- Healthy volunteers accepted
- Adult, Older adult
Study population: Women who have been through menarche and are considering fertility treatment, and menstruate without debilitating gynecological conditions
Who may be able to join
None listed.
Who cannot join
- Are male or 17 years or younger Not experienced menarche or experienced menopause Currently pregnant Have an active vaginal, pelvic or systemic infection that may affect safe participation or sample integrity
- Have a known allergy, sensitivity or intolerance to the menstrual cup material Have any medical, anatomical or physical condition that would make use of a menstrual cup unsafe or impractical Have any condition which, in the opinion of the investigator or delegated clinician, would make participation unsafe, inappropriate or unsuitable Are unable or unwilling to provide written informed consent
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United Kingdom1 site
Genie Fertility
London, ENG
Andreas Hadjimitsis, 07780440936, andreas@geniefertility.com
About this study
This study aims to find out whether menstrual blood can provide similar useful biological information to a standard blood sample taken from a vein in the arm as well as uterine biopsies and vaginal swabs.
Menstrual and reproductive health have historically been under-represented in research, and menstrual blood remains an under-studied biological sample despite its potential value for understanding women's health.
Read more
Women aged 18 years and over who are currently menstruating may be invited to take part. Participants will attend a study visit during their menstrual period, where they will provide a menstrual blood sample collected using a menstrual cup and a small blood sample from a vein in the arm.The samples will be sent to a research laboratory and analysed to compare the biological information they contain.
Some samples may also be processed to extract DNA and isolate cells for research purposes.
The study is low risk and is not expected to provide a direct medical benefit to participants. However, it may help improve understanding of whether menstrual blood could be used more widely in future women's health and fertility research. Participants will not receive individual results, as the tests are for research purposes only and are not designed to provide clinical information about their health.
Read the detailed description
The main aim of this study is to find out whether menstrual blood collected using a menstrual cup can provide similar useful biological information to a standard blood sample taken from a vein in the arm as well as self-administered vaginal swabs and uterine biopsies.The secondary aims of the study are to assess how practical and acceptable it is to collect menstrual blood in a clinic setting, whether these samples can be processed reliably in the laboratory, and whether menstrual blood contains similar useful biological information to a standard blood sample.Menstrual blood is an under-studied biological sample that may contain useful information about reproductive health and general biological processes. At present, standard blood samples are commonly used in research, additionally vaginal swabs and uterine biopsies are invasive techniques but menstrual blood may provide similar or additional information in a less invasive and more relevant way for some aspects of women's health.
There is currently limited evidence on whether menstrual blood can be collected, processed and analysed reliably for this purpose. This study is therefore needed to assess whether menstrual blood could be used alongside or in some cases instead of standard blood sampling in future women's health research.This is a multi-centre observational research study involving women aged 18 years and over who are currently menstruating. Participants will be recruited through participating fertility clinics.
Potential participants will be provided with a Participant Information Sheet and given time to consider participation.
Those who agree to take part will provide written informed consent before any study procedures are carried out.
Participants will attend a study visit during menstruation. At this visit, a trained member of staff will collect a small blood sample from a vein in the arm, this is part of a standard routine care blood draw. Participants will also provide a menstrual blood sample collected using a menstrual cup and a self administered vaginal swab All samples will be labelled with a unique study code and transferred to the research laboratory for processing and analysis. The study will compare information obtained from menstrual blood and standard blood samples to assess whether menstrual blood can be used as a useful biological sample for research. Some samples may be analysed immediately, while others may be stored temporarily as part of this ethically approved study. Samples will also undergo DNA extraction and cell isolation for research purposes.
There are no follow-up visits planned as part of this study, and participants will not receive individual test results.
Participation ends once the study samples have been collected. However some follow up appointments may be required for example if insufficient sample is obtained first time.
- Conditions
- Fertility
- Keywords
- non invasive, menstrual blood, infertility
- Medical subject headings
- Infertility
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| People with no fertility isssues | People such as egg donors, frozen egg patients who are doing IVF without having had any fertility issues | |
| People with fertility issues | People with infertility |
What is being measured
The primary outcome is the main question the study is designed to answer.
Pregnancy percentage
The pregnancy result of a patient after IVF treatment, and percentage of patients who become pregnant
Measured: 2 months
Secondary outcomes (1)
Live birth
the live birth, or other result of the patients' pregnancy
Measured: 10 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Jun 2026
- Study start1 Jul 2026 (estimated)
- Primary completion30 Apr 2029 (estimated)
- Study completion30 Apr 2029 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for FertilityStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 100 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Genie Fertility Ltd
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- CRGH Fertility Clinic London
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07638085
- Sponsor's protocol ID
- 1
- Acronym
- MB1
- Status last verified
- Jun 2026
- First submitted
- 26 May 2026
- Last updated
- 10 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 10 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Exploring and Validating Biomarkers in Menstrual Blood
- ClinicalTrials.gov ID
- NCT07638085
- Acronym / sponsor ID
- MB1 / 1
- Conditions
- Fertility
- Keywords
- non invasive, menstrual blood, infertility
- Study type
- Observational
- Recruitment status
- Not yet recruiting
- Enrolment
- 100 participants (estimated)
- Lead sponsor
- Genie Fertility LtdIndustry (pharma, biotech, devices)
- Collaborators
- CRGH Fertility Clinic London
- Study start
- 1 Jul 2026 (estimated)
- Primary completion
- 30 Apr 2029 (estimated)
- Study completion
- 30 Apr 2029 (estimated)
- First posted
- 10 Jun 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study aims to find out whether menstrual blood can provide similar useful biological information to a standard blood sample taken from a vein in the arm as well as uterine biopsies and vaginal swabs.
Menstrual and reproductive health have historically been under-represented in research, and menstrual blood remains an under-studied biological sample despite its potential value for understanding women's health.
Women aged 18 years and over who are currently menstruating may be invited to take part. Participants will attend a study visit during their menstrual period, where they will provide a menstrual blood sample collected using a menstrual cup and a small blood sample from a vein in the arm.The samples will be sent to a research laboratory and analysed to compare the biological information they contain.
Some samples may also be processed to extract DNA and isolate cells for research purposes.
The study is low risk and is not expected to provide a direct medical benefit to participants. However, it may help improve understanding of whether menstrual blood could be used more widely in future women's health and fertility research. Participants will not receive individual results, as the tests are for research purposes only and are not designed to provide clinical information about their health.
Detailed description
The main aim of this study is to find out whether menstrual blood collected using a menstrual cup can provide similar useful biological information to a standard blood sample taken from a vein in the arm as well as self-administered vaginal swabs and uterine biopsies.The secondary aims of the study are to assess how practical and acceptable it is to collect menstrual blood in a clinic setting, whether these samples can be processed reliably in the laboratory, and whether menstrual blood contains similar useful biological information to a standard blood sample.Menstrual blood is an under-studied biological sample that may contain useful information about reproductive health and general biological processes. At present, standard blood samples are commonly used in research, additionally vaginal swabs and uterine biopsies are invasive techniques but menstrual blood may provide similar or additional information in a less invasive and more relevant way for some aspects of women's health.
There is currently limited evidence on whether menstrual blood can be collected, processed and analysed reliably for this purpose. This study is therefore needed to assess whether menstrual blood could be used alongside or in some cases instead of standard blood sampling in future women's health research.This is a multi-centre observational research study involving women aged 18 years and over who are currently menstruating. Participants will be recruited through participating fertility clinics.
Potential participants will be provided with a Participant Information Sheet and given time to consider participation.
Those who agree to take part will provide written informed consent before any study procedures are carried out.
Participants will attend a study visit during menstruation. At this visit, a trained member of staff will collect a small blood sample from a vein in the arm, this is part of a standard routine care blood draw. Participants will also provide a menstrual blood sample collected using a menstrual cup and a self administered vaginal swab All samples will be labelled with a unique study code and transferred to the research laboratory for processing and analysis. The study will compare information obtained from menstrual blood and standard blood samples to assess whether menstrual blood can be used as a useful biological sample for research. Some samples may be analysed immediately, while others may be stored temporarily as part of this ethically approved study. Samples will also undergo DNA extraction and cell isolation for research purposes.
There are no follow-up visits planned as part of this study, and participants will not receive individual test results.
Participation ends once the study samples have been collected. However some follow up appointments may be required for example if insufficient sample is obtained first time.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| People with no fertility isssues | – | –People such as egg donors, frozen egg patients who are doing IVF without having had any fertility issues |
| People with fertility issues | – | –People with infertility |
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- Women who have been through menarche and are considering fertility treatment, and menstruate without debilitating gynecological conditions
Key inclusion criteria (0 listed)
Key exclusion criteria (2 listed)
- Are male or 17 years or younger Not experienced menarche or experienced menopause Currently pregnant Have an active vaginal, pelvic or systemic infection that may affect safe participation or sample integrity
- Have a known allergy, sensitivity or intolerance to the menstrual cup material Have any medical, anatomical or physical condition that would make use of a menstrual cup unsafe or impractical Have any condition which, in the opinion of the investigator or delegated clinician, would make participation unsafe, inappropriate or unsuitable Are unable or unwilling to provide written informed consent
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Pregnancy percentage
Time frame: 2 months
The pregnancy result of a patient after IVF treatment, and percentage of patients who become pregnant
1 secondary outcome
Live birth
Time frame: 10 months
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 10 Jun 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Fertility, run by Genie Fertility Ltd at 1 site in United Kingdom.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 0 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: opening soon, as of the sponsor's last update on 10 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Andreas Hadjimitsis, Phd (+447780440936, andreas@geniefertility.com), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Pregnancy percentage (time frame: 2 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Jun 2026; AzTrials last refreshed its copy on 26 Oct 2026.