CA-125血检

定义

The CA-125血检 measures the level of the protein CA-125 in the blood.

选择的名字

Ovarian cancer - CA-125 test

How the Test is Performed

A 血液样本 是必要的.

How to Prepare for the Test

No preparation is necessary.

How the Test will Feel

When the needle is inserted to draw blood, some people feel moderate pain. Others feel only a prick or stinging. Afterward, there may be some throbbing or a slight bruise. 这很快就会消失.

Why the Test is Performed

CA-125 is a protein that is found more in 卵巢癌 cells than in other cells.

This blood test is often used to monitor women who have been diagnosed with 卵巢癌. The test is useful if the CA-125 level was high when the cancer was first diagnosed. 在这些情况下, measuring the CA-125 over time is a good tool to determine if 卵巢癌 treatment is working.

The CA-125 test may also be done if a woman has symptoms or findings on ultrasound that suggest 卵巢癌.

在一般情况下, this test is not used to screen healthy women for 卵巢癌 when a diagnosis has not yet been made.

正常的结果

A level above 35 U/mL is considered abnormal.

Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or test different samples. Talk to your doctor about the meaning of your specific test results.

What Abnormal Results Mean

In a woman who has 卵巢癌, a rise in CA-125 usually means that the disease has progressed or come back (recurred). A decrease in CA-125 usually means the disease is responding to current treatment.

In a woman who has not been diagnosed with 卵巢癌, a rise in CA-125 may mean a number of things. While it may mean that she has 卵巢癌, it can also indicate other types of cancer, as well as several other diseases, 比如子宫内膜异位症, 不是癌症.

In healthy women, an elevated CA-125 usually does not mean 卵巢癌 is present. Most healthy women with an elevated CA-125 do not have 卵巢癌, or any other cancer.

Any woman with an abnormal CA-125 test needs further tests. Sometimes surgery 是必要的 to confirm the cause.

风险

There is little risk involved with having your blood taken. Veins and arteries vary in size from one person to another and from one side of the body to the other. Taking a 血液样本 from some people may be more difficult than from others.

Other risks associated with having blood drawn are slight, but may include:

• Fainting or feeling lightheaded
• Multiple punctures to locate veins
• Hematoma (blood accumulating under the skin)
• 大出血
• Infection (a slight risk any time the skin is broken)

参考文献

Coleman RL, Liu J, Matsuo K, Thaker PH, Westin SN, Sood AK. Carcinoma of the ovaries and fallopian tubes. In: Niederhuber JE, Armitage JO, Kastan MB, Doroshow JH, Tepper JE, eds. Abeloff's Clinical Oncology. 6日艾德. Philadelphia, PA: Elsevier; 2020:chap 86.

Freund公里. Approach to women's health. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26日艾德. Philadelphia, PA: Elsevier; 2020:chap 224.

汤姆森C. 卵巢肿瘤. In: Layden EA, Thomson A, Owen P, Madhra M, Magowan BA, eds. Clinical Obstetrics and Gynaecology. 5日艾德. Philadelphia, PA: Elsevier; 2023:chap 12.