What is the CA-15-3 lab test?
A CA-15-3 lab test is a blood test that measures the level of CA-15-3 (cancer antigen 15-3) in the blood.
Why is the CA-15-3 lab test done?
A CA-15-3 lab test is done in order to:
- Monitor the effectiveness of treatment of breast cancer,
- Watch for recurrence of breast cancer.
What does a CA-15-3 lab test measure?
A CA-15-3 lab test measures the amount of CA-15-3 (cancer antigen 15-3) in the blood. Cancer antigen 15-3 stimulates the body’s defense system. Breast cancer cells release CA-15-3 into the blood.
Are there any risks associated with this test?
There are no known risks associated with this test.
How should I prepare for this test?
This test does not require any special preparation.
Can this test diagnose breast cancer?
This test can not diagnose or screen for breast cancer.
What does an elevated CA-15-3 mean?
The higher the level of CA-15-3 in the blood, the more cancer there is in the body. The levels are highest when breast cancer has spread to the bones, the liver or both.
At what time of the day should I get this test done?
You can get this test done at any time during the day.
Normal level of CA-15-3 is equal to or less than 30 U/mL.
A CA-15-3 lab test is done in order to:
- Monitor the effectiveness of treatment of breast cancer,
- Watch for recurrence of breast cancer.