Cancer Antigen 125 (CA-125) QUIZ

1 / 10

What is the full form of CA-125?

Cancer Antigen 125

Carcinoma Antigen 125

Carbohydrate Antigen 125

Cancer Agent 125

2 / 10

CA-125 is most commonly associated with which type of cancer?

Breast cancer

Cervical cancer

Ovarian cancer

Prostate cancer

3 / 10

CA-125 is specific for ovarian cancer and is rarely elevated in other conditions.

True

False

4 / 10

Which of the following is NOT a benign condition that can elevate CA-125?

Menstruation

Pregnancy

Liver cirrhosis

All of the above

5 / 10

What is the typical upper limit of normal for CA-125 in most laboratories?

10 U/mL

25 U/mL

35 U/mL

50 U/mL

6 / 10

CA-125 can be used to monitor treatment response and detect recurrence in ovarian cancer.

True

False

7 / 10

Which of the following techniques is commonly used in automated CA-125 testing :

Enzyme-linked immunosorbent assay (ELISA)

Chemiluminescence immunoassay (CLIA)

Radioimmunoassay (RIA)

Both a&b

8 / 10

In premenopausal women, why is CA-125 less specific as a tumor marker?

Levels are always low

There are no ovarian tumors in this group

It can be elevated due to benign gynecologic conditions

It is not produced in young women

9 / 10

Which other cancers may show elevated CA-125 levels?

Pancreatic cancer

Endometrial cancer

Lung cancer

All of the above

10 / 10

A normal CA-125 level rules out the presence of ovarian cancer.

True

False

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