CA 125

This test is a blood test used to measure the level of cancer antigen 125 (CA 125), a protein that may be elevated in certain conditions, especially ovarian cancer. It is commonly used to monitor treatment response and detect recurrence in patients already diagnosed with ovarian cancer.

The purpose of this test is to:

• Measure CA 125 levels in the blood
• Monitor ovarian cancer treatment and progression
• Detect recurrence of ovarian cancer
• Assist in evaluating pelvic masses
• Support diagnosis along with other clinical tests

CA 125 Test Purpose

The CA 125 (Cancer Antigen 125) Test measures the level of CA 125, a protein found on the surface of certain cells and released into the bloodstream. It is primarily used as a tumor marker to help evaluate, monitor, and manage ovarian cancer, particularly epithelial ovarian cancer. Although elevated CA 125 levels may be associated with ovarian cancer, they can also occur in several non-cancerous conditions, making this test one part of a comprehensive clinical evaluation.

Healthcare providers commonly recommend the CA 125 Test for women with symptoms such as persistent abdominal bloating, pelvic pain, unexplained abdominal swelling, feeling full quickly, frequent urination, or a pelvic mass detected during examination or imaging. It is also widely used to monitor the effectiveness of ovarian cancer treatment, detect recurrence after therapy, and assess disease progression.

Furthermore, the CA 125 Test may show elevated levels in several benign gynecological conditions, including endometriosis, uterine fibroids, pelvic inflammatory disease (PID), ovarian cysts, and even during menstruation or pregnancy. In addition, certain non-gynecological conditions such as liver disease, pancreatitis, and peritonitis may also increase CA 125 levels. Therefore, the test is not recommended as a stand-alone screening test for ovarian cancer in the general population. Instead, healthcare providers interpret the results together with imaging studies and other diagnostic findings to improve accuracy.

The CA 125 Test is often performed alongside Pelvic Ultrasound, Transvaginal Ultrasound (TVS), HE4 (Human Epididymis Protein 4), ROMA (Risk of Ovarian Malignancy Algorithm), CEA, CA 19-9, and other tumor markers when evaluating ovarian masses or monitoring gynecological cancers.

This Test is Recommended for Individuals:

• Women with suspected ovarian cancer.
• Individuals with persistent abdominal bloating or pelvic pain.
• Women with a pelvic or ovarian mass detected on imaging.
• Patients undergoing treatment for ovarian cancer.
• Individuals requiring monitoring for ovarian cancer recurrence.
• Women with a family history of ovarian cancer who require further evaluation.
• Patients advised by their healthcare provider to undergo tumor marker testing.

FAQs

1. What is the CA 125 Test used for?

This Test measures the level of Cancer Antigen 125 in the blood. It is primarily used to monitor ovarian cancer, evaluate treatment response, detect recurrence, and support the assessment of ovarian masses along with imaging and other diagnostic tests.

2. Do I need to fast before the CA 125 Test?

No. Fasting is generally not required for the CA 125 Test. However, always follow any specific instructions provided by your healthcare provider before sample collection.

3. Does a high CA 125 level always mean ovarian cancer?

No. An elevated CA 125 level does not always indicate ovarian cancer. It can also be seen in conditions such as endometriosis, ovarian cysts, pelvic inflammatory disease, menstruation, pregnancy, liver disease, and other inflammatory conditions. Your healthcare provider will interpret the result together with your symptoms, imaging studies, medical history, and additional laboratory tests to determine the underlying cause.