

Breast Carcinoma-Associated Antigen - C2729
CA 27.29 is a blood test that measures a protein associated with certain breast cancer cells. It is most commonly used to monitor treatment response and disease progression in individuals previously diagnosed with breast cancer.
CA 27.29 testing helps assess:
• Monitoring response to breast cancer treatment
• Detecting possible recurrence
• Tracking changes over time
• Supporting ongoing cancer surveillance
Reference Range (General Guidance)
Typically <38 U/mL (may vary slightly by laboratory).
What Your Results May Mean
• Within Range: Generally consistent with no significant elevation.
• Elevated: May be associated with active or recurrent disease, but can also rise in some benign conditions. Results should always be interpreted in clinical context.
