Lab test
Ovarian Cancer Blood Test – CA-125 Testing
Ovarian Cancer Blood Test – CA-125 Testing is a laboratory test you can request directly. This blood test measures Cancer Antigen 125 (CA-125), a substance found on the surface of many ovarian cancer cells.
What this test is
The CA-125 test is a blood test that measures the amount of CA-125 in your blood. CA-125 is a protein that can be found on the surface of many types of cancer cells, particularly ovarian cancer cells.
What it measures
- CA-125 — a protein that can be elevated in certain cancers, especially ovarian cancer
What the test involves
This test requires a standard blood draw. A healthcare professional will collect a sample of your blood, typically from a vein in your arm.
Why it is often ordered
Clinicians may order this test to help monitor the effectiveness of treatment for certain cancers, such as ovarian cancer. It can also be used to check for the return of cancer after treatment.
Preparation
Follow the specific preparation instructions provided by the laboratory where you will have your blood drawn. This may include fasting or avoiding certain foods or medications.
How results are reported
Your test results will indicate the level of CA-125 found in your blood. Reference ranges, which define what is considered a typical level, vary between laboratories.
Before you go
- Preparation instructions
- Test turnaround time
- How to receive your results
FAQ
Frequently asked questions
Can this test diagnose ovarian cancer?
This test is not used to diagnose ovarian cancer on its own. Elevated levels of CA-125 can be caused by conditions other than cancer, such as menstruation, pregnancy, or benign gynecological conditions. It is typically used in conjunction with other tests and information.
What is a normal level of CA-125?
Normal levels of CA-125 can vary depending on the laboratory performing the test. Your healthcare provider will interpret your results in the context of your individual health and medical history.
Who should get this test?
This test is usually ordered by a healthcare provider for individuals with a known diagnosis of ovarian cancer to monitor treatment or recurrence. It is not typically used as a routine screening test for the general population.
How long does it take to get results?
The typical turnaround time for this test is 1 to 3 business days. However, this can vary based on the laboratory's processing times.
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Locations
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