CA 15.3 (BREAST CANCER MARKER)

<p>CA 15-3 (Cancer Antigen 15-3) is <!--qkimaf kz6vX_8/HugV6--><!--cqw1tb kz6vX_8/HugV6-->a tumor marker used primarily to monitor the treatment of advanced breast cancer and to watch for recurrence<!--TgQPHd||[]-->. It is not a diagnostic tool for early-stage screening, as its levels typically do not elevate until the disease is widespread.</p>