Are you interested in participating?

Download Questionnaire

Why is this study being done?

Research suggests that estrogen (EDA) levels may be useful to assess a woman's risk of breast cancer, although it is yet unclear which forms of estrogens provide the most information. We can measure the different forms of estrogen in urine samples. The goal of this study is to find out if they vary over time or stay at constant levels in healthy women. We are asking 33 healthy women to participate in this study. We ask that each woman collect and deliver 6 urine samples over a 3 month period (about every 2 weeks) to the Prevention Center.

The results of this investigation will provide important information on EDAs, which will inform us of its potential for clinical use.

We are looking for...



Summary of activities...

Attend an information meeting

Complete a questionnaire

Download Questionnaire

6 urine collections at home over 3 months

If you are interested in participating...

If you are interested in participating and believe you are eligible, please contact the study staff by email ( or by phone (206-667-6578). We will send you information about the study and a screening questionnaire to complete.

After we have determined that you are eligible, we will invite you to come to the Center for a short meeting to give you an overview of the study and answer any questions you have. If you decide to participate, we will have you sign a consent form that has all the details of the study. You will complete a Health and Lifestyle Questionnaire while you are there. We will also give you materials to complete the first morning urine collection and schedule your next study visit.

You can decide at any point not to take part in this study. There is no obligation.

How to get to Fred Hutchinson Cancer Research Center...

All activities take place at the Fred Hutchinson Cancer Research Center in Seattle’s South Lake Union neighborhood. Parking is free.

Metro Bus routes close by are #66 (Eastlake Ave. N and Aloha) and #70 (Fairview Ave. N and Yale). The South Lake Union Streetcar also stops in front of the Center.

This study is funded by the National Cancer Institute.

If you have questions,
write to us at
or call (206) 667-4353.