Frequent question: How accurate is CA 125 in detecting ovarian cancer?

Results: Using a CA125 cutoff of 30 U/mL, an overall sensitivity of 94.8% (96.6% specificity) was obtained when comparing malignancies versus healthy postmenopausal controls, whereas a cutoff of 65 U/mL provided a sensitivity of 83.9% (99.6% specificity).

How reliable is c125 test?

A CA 125 test isn’t accurate enough to use for ovarian cancer screening in general because many noncancerous conditions can increase the CA 125 level. Many different conditions can cause an increase in CA 125, including normal conditions, such as menstruation, and noncancerous conditions, such as uterine fibroids.

Can you still have ovarian cancer if CA125 is normal?

A normal CA125 test cannot be used to rule out ovarian cancer. Some women with ovarian tumours never have an elevated CA125, and about half of women with early-stage tumours have a CA125 level in the normal range. So it’s possible to have ovarian cancer and a normal CA125 result.

How often is CA125 wrong?

The lack of a reliable test.

Conversely, not all ovarian cancer types cause elevations in CA125 and we estimate that 10% to 20% of all ovarian cancer escape this test (false negative test).

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Can CA125 be wrong?

A high level of CA-125 can be a sign of cancer, particularly ovarian cancer. However, the test can have both false positive and false negative findings. CA-125 levels can be normal even if a person has cancer, or they can be elevated in a patient who does not have cancer.

What is a bad CA 125 level?

The tumor marker Ca 125 is a prognostic factor. Levels around 100 U/l are indicative of a bad prognosis.

How quickly does CA125 rise?

The average time from serum CA125 increase to detection of a recurrent lesion by physical or imaging examination was 122 days. The correlation coefficient of serum CA125 level increase and tumor recurrence time was −0.674.

Is CA125 always raised in ovarian cancer?

While women with ovarian cancer often have an elevated level of CA 125 , an elevated CA 125 level doesn’t always mean you have ovarian cancer. Some women with ovarian cancer never have an elevated CA 125 level.

Is CA125 always elevated in ovarian cancer?

Ovarian Cancer Testing

The CA-125 is a blood test that is often, but not always, elevated with ovarian cancer. If a postmenopausal woman has a mass and an elevated CA-125, she has an extremely high risk of having a cancer.

Does CA125 always detect cancer?

Does a high CA-125 always mean cancer? No, a high CA-125 does not always mean cancer is present. Generally speaking, the normal range of CA-125 is considered to be 0-35 units/mL, while a level above 35 units/mL is considered to be a high CA-125 level.

Can CA125 be raised for no reason?

Blood test (CA125 test)

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CA125 is produced by some ovarian cancer cells. A high level of CA125 in your blood could be a sign of ovarian cancer. But a raised CA125 level does not mean you definitely have cancer, as it can also be caused by other conditions such as endometriosis, fibroids and even pregnancy.

Can stress cause CA125 to rise?

The most popular current theories suggest that CA 125 is synthesized by mesothelial cells in response to stress, which can be either mechanical stress caused by fluid overload, or inflammatory stress instigated by the release of mediators such as TNFα and interleukins [5,6].

What causes false positive CA125?

False positive results were largely caused by another malignancy (48 cases; 26%), benign ovarian disease (26 cases; 14%), and benign gynaecological conditions, particularly leiomyomas (18 cases; 9%). The specificity of CA125 for ovarian cancer increased with concentrations >1000 kU/litre.