CA-125 Blood Test

marvel img

Explore our in-depth blog covering all aspects of the CA-125 blood test. From deciphering ovarian cysts to locating optimal facilities such as Marvel Path Lab for precise testing, we leave no stone unturned. Delve into the significance of the CA-125 examination, its procedural intricacies, result interpretation, and beyond. Whether you're curious about expenses, nearby test sites, or the test's relevance in cancer screening, our blog provides comprehensive insights. Discover how Marvel Path Lab excels in delivering top-tier reports, offering reassurance to individuals undergoing ovarian cancer screening.

What is a CA-125 Blood Test?

The CA-125 blood test measures the level of cancer antigen 125 (CA-125) in your blood. This protein is produced by certain cells in the body and is often found at higher levels in people with certain types of cancer, most notably ovarian cancer. However, it's important to understand that elevated CA-125 levels can also occur in non-cancerous conditions.

Why is the CA-125 Blood Test Important?

The primary use of the CA-125 blood test is in the management of ovarian cancer. It helps in:


  • Monitoring Treatment: Evaluating how well the treatment for ovarian cancer is working.
  • Detecting Recurrence: Checking if the cancer has come back after treatment.
  • Diagnosis: Sometimes used alongside other tests to help diagnose ovarian cancer.

CA-125 Blood Test for Ovarian Cysts

Ovarian cysts are fluid-filled sacs that can arise on the ovaries. While most ovarian cysts are benign, they can sometimes cause an increase in CA-125 levels. Therefore, this test can be part of the evaluation process when ovarian cysts are present.

CA-125 Blood Test Procedure

The CA-125 blood test is straightforward and involves drawing blood from a vein, usually in your arm. The blood sample is subsequently forwarded to a laboratory for examination. There is no need to fast prior to taking the test.

Interpreting CA-125 Blood Test Results

Normal Range: Typically, a CA-125 level below 35 units per milliliter (U/mL) is considered normal.
Elevated Levels: Elevated CA-125 levels can indicate ovarian cancer, but they can also be caused by other conditions such as endometriosis, pelvic inflammatory disease, menstruation, pregnancy, or liver disease.

CA-125 Blood Test for Other Cancers

While the CA-125 test is primarily associated with ovarian cancer, it can sometimes be used in the context of other cancers, including lung cancer and cervical cancer. However, it is not specific to these cancers and should not be relied upon solely for their diagnosis.

Cost of CA-125 Blood Test

The cost of the CA-125 blood test can vary widely depending on your location, the lab conducting the test, and whether you have insurance coverage. On average, it can range from $100 to $200. Some insurance plans, including Medicare, may cover the test if it's deemed medically necessary.


Can You Do the CA-125 Blood Test at Home?

Currently, the CA-125 blood test is not available for at-home use. It requires a blood sample to be drawn by a healthcare professional and processed in a lab.


Finding a CA-125 Blood Test Near You

If you're considering a CA-125 blood test, why not choose Marvel Path Lab for the highest quality reports? While consulting your doctor for a referral to a local lab or clinic is recommended, you can also directly book your test with us online. Marvel Path Lab specializes in CA-125 blood tests for ovarian cancer screening, ensuring accurate results and top-notch service.



The CA-125 blood test is a valuable tool in the management and monitoring of ovarian cancer, though it's not definitive on its own. Elevated CA-125 levels can be caused by various conditions, both cancerous and non-cancerous. Always consult with your healthcare provider to understand what your CA-125 test results mean in the context of your overall health and medical history.


Frequently Asked Questions (FAQs)

Q.1. Does Medicare cover the CA-125 blood test?

ANS. Medicare may cover the test if it's deemed medically necessary for monitoring ovarian cancer.

Q.2. Is fasting required for the CA-125 blood test?

ANS. No, fasting is not required before taking the CA-125 blood test.

Q.3. How much does a CA-125 blood test cost?

ANS. The cost can range from $100 to $200, depending on various factors.

Q.4. What does a CA-125 blood test show?

ANS. The test shows the level of CA-125 protein in the blood, which can be elevated in cases of ovarian cancer and other conditions.

By understanding the CA-125 blood test, you can better navigate your health care options and have informed discussions with your doctor.