for females ages 18 years and up (full criteria)
Healthy Volunteers
healthy people welcome
study started
completion around
Principal Investigator
by Christina Chambers, PhD, MPH (ucsd)
Headshot of Christina Chambers
Christina Chambers



The purpose of the UCSD Human Milk Biorepository is to establish and maintain a repository of breast milk samples that can be used to learn more about how breast milk influences infant and child health.

Official Title

The UCSD Human Milk Biorepository


Participants in this study will participate in the following:

  1. Provide a milk sample:

    If participants agree, the investigators will ask participants to express 50ml (about 2 ounces) of milk. The investigators will take as much as participants wish to donate, or as little as one teaspoon.

  2. Answer questions about participant's health:

    Future researchers may need to know if participants have any health problems, or about any treatments participants have had while breastfeeding. The investigators will ask participants for some contact information, health habits, and family's health history.

  3. Fill out online questionnaires about participant's eating habits and mood:

    The investigators will ask the participant to answer an online questionnaire about how often participants eat certain foods.

    The investigators will also have the participant answer some questions about the participant's mood and how the participant has been feeling recently. The questionnaires can be completed on a tablet at the visit, or the investigators may send an email with a link to fill it out online. These questionnaires take about 30 minutes altogether.

  4. The investigators will store the participant's sample and information in the Human Milk Biorepository:

    The investigators will keep the participant's milk and health information in the Human Milk Biorepository. There is no limit on the length of time we will keep the milk and information. The investigators will keep them as long as they are useful, unless the participant asks to remove them.

  5. The investigators will let researchers use the stored materials for approved research studies:

    Researchers can apply to study the samples and information stored in the Human Milk Biorepository.

  6. If the participant agrees, the investigators may contact the participant with information about other research studies.


Breastfeeding, COVID-19 Infection, COVID-19 Vaccine, Remdesivir, Antibiotics, COVID-19, Anti-Bacterial Agents, COVID-19 Exposure, Antibiotic, Sub-study 100: COVID-19 Exposure, Sub-study 101: Antibiotic Exposure


You can join if…

Open to females ages 18 years and up

  • Women who are 18 years old or older
  • Breastfeeding
  • Producing sufficient breast milk to donate an excess to the Biorepository

You CAN'T join if...

  • Women under 18 years old


  • University of California, San Diego accepting new patients
    San Diego California 92093 United States

Lead Scientist at University of California Health

  • Christina Chambers, PhD, MPH (ucsd)
    Dr. Chambers is a professor of pediatrics at University of California, San Diego and Vice Chair of Clinical Research for the Department of Pediatrics at UCSD and Rady Children's Hospital. She is a perinatal epidemiologist, whose research is focused on environmental exposures and pregnancy and child health outcomes, including birth defects.


accepting new patients
Start Date
Completion Date
University of California, San Diego
Study Type
Expecting 5000 study participants
Last Updated