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Daily urine samples from 1,500 women could unlock fertility secrets

NCT ID NCT05642637

Knowledge-focused Sponsor: SPD Development Company Limited Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study collects daily urine samples from 1,500 women who are trying to conceive. Participants use a Clearblue ovulation test to track their fertile window and provide samples for up to 3 menstrual cycles. The samples are stored in a biobank for future research on pregnancy and fertility. No treatment or intervention is given.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 1,500 people

The number the study aims to enrol. It can still change while the study runs.

Started

Dec 2022

Expected to finish

Jan 2028

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Women trying to conceive

Ages

18 years and older

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Females aged 18 and over actively trying to conceive * At least 2 regular consecutive cycles since last pregnancy/miscarriage/ stopping breastfeeding or contraception * Willing to disclose their pregnancy status and provide urine samples. * Willing to give informed consent and comply with the study procedures Exclusion Criteria: * Trying to conceive for \>6 months (under 35 years) or \> 3 months (35 years and over) * Has a diagnosis of Polycystic Ovary Syndrome (PCOS) * Taking medication or has known condition which means they should not get pregnant. * Currently pregnant or breastfeeding * Using any treatment which may affect the menstrual cycle (e.g. contraceptive pill) * Using or has previously used infertility medications or hormone replacement medications containing LH or hCG \\ (e.g. Pregnyl®) * Using or undergoing any other medical treatment for fertility such as ovulation drugs, artificial insemination and assisted fertility such as IVF or ICSI * Peri-or post-menopausal, e.g. experiencing symptoms: irregular menstrual periods, hot flushes, night sweats, sleep disturbances and/or moods swings * Abnormal liver or kidney function * Taking antibiotics containing tetracycline. * Participated in this study within the last 6 months

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Pregnancy

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • SPD Development Company Ltd

    RECRUITING

    Bedford, Bedfordshire, MK44 3UP, United Kingdom

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