Question 1

Can CA-125 detect early-stage ovarian cancer?

Accepted Answer

CA-125 has limited sensitivity for early-stage disease. The test detects elevated levels in only about 50% of stage I ovarian cancers but is more sensitive (90%) for stage II and higher. This is why it's not recommended as a general screening tool for asymptomatic individuals.

Question 2

Why might my CA-125 levels be elevated if I don't have cancer?

Accepted Answer

Many benign conditions can elevate CA-125, including endometriosis, ovarian cysts, pregnancy, menstruation, pelvic inflammatory disease, liver disease, and heart failure. This is why the test must be interpreted in context with symptoms, physical examination, and imaging studies.

Question 3

How often should CA-125 be monitored after ovarian cancer treatment?

Accepted Answer

For surveillance after treatment, CA-125 levels are typically obtained every 3 months for 2 years, every 6 months for the next 3 years, and yearly thereafter. However, the specific schedule may vary based on individual risk factors and treatment response.

Question 4

Should I avoid testing during my menstrual period?

Accepted Answer

Yes, CA-125 levels can be significantly elevated during menstruation, potentially leading to misinterpretation of results. It's recommended to schedule testing at least one week after your menstrual period ends for the most accurate results.

Question 5

Can stress or other factors affect CA-125 levels?

Accepted Answer

Some evidence suggests that high levels of stress may cause the body to generate increased CA-125. Additionally, factors like age and race can influence levels - CA-125 tends to decline with age and menopause, and levels may vary among different ethnic groups.

Question 6

What should I do if my CA-125 level is elevated?

Accepted Answer

An elevated CA-125 result requires follow-up with a healthcare provider for proper interpretation. Additional testing such as imaging studies (transvaginal ultrasound, CT scan) or repeat testing may be recommended to determine the cause and appropriate next steps.

CA-125 (Ovarian Cancer Marker)