Compare this test’s laboratory options
CA 27-29
Access Labcorp Draw · Access Medical Labs · Quest Diagnostics3 test optionsFrom $57.92
CA 27-29
Access Labcorp Draw · Access Medical Labs · Quest DiagnosticsCatalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.
What this laboratory test evaluates
DetailsCA 27-29 is a tumor marker primarily used to monitor breast cancer. It measures a protein released by cancer cells into the blood. Like CA 15-3, it is used to assess treatment response and detect recurrence, but it is not recommended for initial diagnosis due to possible elevation in non-cancerous conditions such as liver disease or benign breast disorders.
What type of sample is required for this test?Serum
Test ResourcesFor more information, please consult your healthcare provider.
Additional test information
CA 27-29 is a tumor marker primarily used to monitor breast cancer. It measures a protein released by cancer cells into the blood. Like CA 15-3, it is used to assess treatment response and detect recurrence, but it is not recommended for initial diagnosis due to possible elevation in non-cancerous conditions such as liver disease or benign breast disorders.
Collection and processing
- Sample type: Serum
- Fasting: No
- Estimated laboratory processing: Results should arrive 1 – 2 business days after the lab receives samples.
How Sunridge uses laboratory information
Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.
Before requesting this test
Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.
Common questions about this laboratory test
- What sample does this test require?
- The listed sample type is Serum. Confirm current collection instructions in the approved order.
- Does this test require fasting?
- The current catalog record lists fasting as: No. Follow the instructions supplied with the approved order.
- How long does laboratory processing usually take?
- Results should arrive 1 – 2 business days after the lab receives samples.. Timing can change after collection or if a laboratory requires additional review.
About this test
DetailsCA 27-29 is a tumor marker primarily used to monitor breast cancer. It measures a protein released by cancer cells into the blood. Like CA 15-3, it is used to assess treatment response and detect recurrence, but it is not recommended for initial diagnosis due to possible elevation in non-cancerous conditions such as liver disease or benign breast disorders.
What type of sample is required for this test?Serum
Test ResourcesFor more information, please consult your healthcare provider.
Additional details
CA 27-29 is a tumor marker primarily used to monitor breast cancer. It measures a protein released by cancer cells into the blood. Like CA 15-3, it is used to assess treatment response and detect recurrence, but it is not recommended for initial diagnosis due to possible elevation in non-cancerous conditions such as liver disease or benign breast disorders.
Highlighted health areas
- Tumor markers
Biomarkers and report focus
The exact analytes and report format can change. Confirm the current contents in the Fullscript order before payment.
- CA 27.29