CA 15-3
A breast marker, used to follow treated disease rather than to find new disease. It appears here to complete the screening set your clinician reviews as a group.
What the numbers mean
These are the ranges BioForge works to. They are not the same as a lab's reference range, which is built from the general population rather than from people who feel well.
What moves CA 15-3
Rises with benign breast disease, liver disease, and some lung and ovarian conditions. The trend over time is the signal; a single number in isolation carries very little.
Related markers in Immune & Cancer Screening Markers
This page is educational and is not medical advice. Ranges are general and do not account for your history, medications or symptoms — a single number never decides a protocol. Your results are interpreted by a licensed clinician alongside everything else about you. Back to the Learning Center
Want to know where your numbers actually sit?
Every BioForge protocol starts from your own bloodwork. The first 15-to-30-minute call is free.