Muse Bio is conducting groundbreaking research on menstrual blood-derived stem cells (MenSCs) — a promising, non-invasive source for regenerative medicine. Our technology allows for reliable collection, isolation and preservation of stem cells derived from menstrual blood using a simple at-home process.

We're investigating how menstrual blood could serve as an accessible and inclusive source for future stem cell therapies. Your participation will help us understand:

  • Cell viability 

  • Influence of lifestyle, health history, contraceptive use, on stem cell quality

  • Ways to improve the sample collection process

    Our study is IRB Approved (Protocol: Pro00088779) and designed to be simple, private, and respectful of your experience.

What we’re studying

Your participation directly contributes to making stem cell therapies more inclusive and accessible. Here's why this research is important:

Why This Research Matters

  • Traditional stem cell sources can be limited, expensive, or raise ethical concerns. Menstrual blood offers a renewable, non-invasive alternative that could democratize access to regenerative medicine.

  • This research puts menstrual and women's health at the center of scientific innovation. By participating, you're helping advance a field that has historically overlooked the unique biology and contributions of people who menstruate.

  • You're not just a data point — you're a partner in scientific discovery. This study is designed to be convenient, respectful of your time, and compensates you fairly for your contribution.

  • Must take a 5 minute health screening form.

  • A 10-15 minute hands-on sample collection (with 4-8 hours wearing the menstrual cup).

  • Must take a 2-5 minute feedback survey.

  • Must be within traveling distance of Frontier Tower.

What To Expect

Frontier Tower, Market Street, San Francisco, CA

The Process

Eligibility Form

Select Pickup Date & Time

Inserting The Menstrual Cup

Be at Drop-off Site

Receive Compensation

Get Gifted a Goody Bag!

We're looking for participants who meet the following criteria:

 Are You Eligible

    • Age: 18 to 45 years old

    • Location: Able to travel to our San Francisco drop-off site at Frontier Tower (995 Market St, San Francisco, CA 94103)

    • Sample collection: Willing to provide a menstrual blood sample

    • Menstrual cup use: Willing to use a menstrual cup for sample collection

    • Informed consent: Able to provide informed consent on your own behalf


    • You are not eligible if any of the following currently apply to you:

    • Currently pregnant or breastfeeding

    • Use of systemic immunosuppressants, corticosteroids, or antibiotics in the past 2 weeks

    • Recent or active gynecologic or vaginal infections within 24 hours of sample collection

    • Use of bacterial or topical ointments/creams in the genital area within 24 hours of sample collection

    • Diagnosed reproductive disorders (e.g., endometriosis, PCOS) that may affect menstrual blood composition

    • Personal history of blood or clotting disorders or currently taking anticoagulants

    • Discomfort with or unwillingness to use a menstrual cup for collection

    • Known diagnosis of or recent exposure (within the past 12 months) to bloodborne infections such as HIV, Hepatitis B, or Hepatitis C

    1. Fill out the eligibility form to confirm you qualify for the study

    2. Select a pickup date and time to arrange your menstrual cup pickup at Frontier Tower (995 Market St, San Francisco, CA 94103)

    3. Insert the menstrual cup for 4 to 8 hours on any day between the 1st and 3rd days of your period that is most convenient for you.

    4. Come to the drop-off site wearing the cup during your scheduled sample drop-off time

    5. Receive your compensation after completing the brief health form and feedback survey

  • We welcome participants with all types of menstrual cycles! Whether you have regular periods (every 21-35 days) or irregular cycles, you may be eligible. We believe categorizing "irregular" vs "regular" cycles limits our understanding of the full spectrum of menstrual experiences, so your cycle pattern does not affect your eligibility.

  • You may participate up to 9 times throughout the calendar year based on your interest and eligibility.

Ready to participate?

check your eligibility

Additional Information You Should Know

Confidentiality

  • Because this study involves experimental use of non-public methods, we ask participants to keep confidential any information about the blood collection process and products used in the study.

Study Team Disclosure

  • The investigators and research staff have an ownership interest in Muse Bio, the company sponsoring this research study.

Not a Medical Treatment

  • This is a non-therapeutic research study. It is not intended to diagnose, treat, or cure any medical condition. You will not receive medical advice or treatment as part of your participation.


Thank you for your interest in supporting early-stage research and scientific innovation. Your participation helps shape the future of inclusive stem cell science.

— The Muse Bio Team

IRB Approved Protocol: Pro00088779