Cancer Antigen (CA) 15-3
Fasting Required: No

Specimen: Blood

Lab: Quest Diagnostics

Results: 3-5 Business days
Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.

Limitations: Benign diseases of the breast and liver may cause elevated results.

Description: CA 15-3 is a blood test used to monitor response to breast cancer treatment and disease recurrence. Elevated levels may also be seen in lung, ovarian, endometrial, bladder, gastrointestinal cancers, as well as liver disease (cirrhosis, hepatitis), lupus, sarcoid, tuberculosis, and non-cancerous breast lesions.

Alternative Name(s): Cancer Antigen 15-3