• Skip to main content
  • Primary Navigation
  • Site Footer
Breast Cancer Index®
  • About the BCI Test
  • Treatment Planning
  • Explore the Report
  • Resources
Get My BCI Test Contact Us
Are you a healthcare provider? Visit the new BCI Provider Site: Go to Hologic.com

Please select an option below to continue:

I am a healthcare provider Click to visit the Provider Site on Hologic.com
I am a patient or caregiver Click to continue to the Patient Site

Thanks For Submitting!

More Information Is On The Way.

You will be receiving tools to help guide you through the process. In the meantime, you can download the Patient Resource Card:

Download The Patient Resource Card

You can also download digital versions of the Breast Cancer Resource Guide and Navigation Notebook to get started.

  • Download The Breast Cancer Resource Guide
  • Download The Breast Cancer Navigation Notebook
Breast Cancer Index®

Biotheranostics, Inc., A Hologic Company

Are you a healthcare provider? Visit the BCI Provider Page

© 2026 Hologic, Inc. All rights reserved. Hologic, Biotheranostics, BCI, Breast Cancer Index, and associated logos are trademarks and/or registered trademarks of Hologic, Inc. and/or its subsidiaries in the United States and/or other countries. All other trademarks are the property of their respective owners.

  • Notice of Privacy Practices
  • Privacy Policy
  • Terms and Conditions
  • Statement on Nondiscrimination

Explore

  • About the BCI Test
  • Treatment Planning
  • Explore the Report
  • Resources
  • Get My BCI Test

Contact

Biotheranostics, Inc., A Hologic Company
6333 Sequence Drive
San Diego, CA 92121

Contact Our Patient Services Team
Hours: 6:00 am - 4:00 pm (PST)

(844) 319-8111
Patient.Services@hologic.com

© 2026 Hologic, Inc. All rights reserved. Hologic, Biotheranostics, BCI, Breast Cancer Index, and associated logos are trademarks and/or registered trademarks of Hologic, Inc. and/or its subsidiaries in the United States and/or other countries. All other trademarks are the property of their respective owners.

  • Notice of Privacy Practices
  • Privacy Policy
  • Terms and Conditions
  • Statement on Nondiscrimination

Breast Cancer Index Test Intended Uses and Limitations
The Breast Cancer Index (BCI) Risk of Recurrence & Extended Endocrine Benefit Test is indicated for use in women diagnosed with hormone receptor-positive (HR+), lymph node-negative (LN-) or lymph node-positive (LN+; with 1-3 positive nodes) early-stage, invasive breast cancer, who are distant recurrence-free. The BCI Test provides: 1) a quantitative estimate of the risk for both late (post-5 years from diagnosis) distant recurrence and of the cumulative distant recurrence risk over 10 years (0-10y) in patients treated with adjuvant endocrine therapy (LN- patients) or adjuvant chemoendocrine therapy (LN+ patients), and 2) prediction of the likelihood of benefit from extended (>5 year) endocrine therapy. BCI results are adjunctive to the ordering physician’s workup; treatment decisions require correlation with all other clinical findings. This test was developed and its performance characteristics determined by Biotheranostics, Inc. It has not been cleared or approved by the U.S. Food and Drug Administration. This test is used for clinical purposes and should not be regarded as experimental or investigational. How this information is used to guide patient care is the responsibility of the treating provider. Biotheranostics is certified under the Clinical Laboratory Improvement Amendments of 1988 to perform high complexity clinical laboratory testing.