CA 15-3 may be useful for monitoring patients with metastatic breast cancer and certain ovarian cancers. The CA 15-3 values from sequential samples have a high correlation with the clinical course in most patients with metastatic breast cancer.
1 yellow-top SST tube (minimum: 0.5 mL of serum). Centrifuge SST 30 minutes after draw. Refrigerate specimen after collection.
Days Set Up: Monday through Sunday