What is AFP tumor Marker test?
AFP (Alpha-fetoprotein) tumor marker test
The AFP tumor marker test measures the level of alpha-fetoprotein (AFP) in the blood. AFP is a protein that is produced by the liver and the yolk sac of a developing fetus. Normally, AFP levels decrease after birth and remain low in adults. However, elevated AFP levels can be a sign of certain types of cancer, including liver cancer, germ cell tumors, and some types of lung cancer.
Why is the AFP tumor marker test performed?
The AFP tumor marker test may be performed for the following reasons:
* To screen for liver cancer in people at high risk, such as those with chronic liver disease or a family history of liver cancer
* To diagnose liver cancer
* To monitor the progression of liver cancer and the response to treatment
* To detect recurrence of liver cancer after treatment
* To diagnose and monitor germ cell tumors, such as testicular cancer, ovarian cancer, and choriocarcinoma
How is the AFP tumor marker test performed?
The AFP tumor marker test is a simple blood test. A blood sample is drawn from a vein in the arm and sent to a laboratory for analysis. The results of the test are usually available within a few days.
What do the results of the AFP tumor marker test mean?
The normal range for AFP levels varies depending on the laboratory that performs the test. However, in general, AFP levels below 10 ng/mL are considered normal for adults. Elevated AFP levels may be a sign of certain types of cancer, including liver cancer, germ cell tumors, and some types of lung cancer.
It is important to note that elevated AFP levels do not always mean that cancer is present. There are a number of other conditions that can cause AFP levels to rise, such as pregnancy, liver disease, and hepatitis. Therefore, further testing is usually necessary to confirm a diagnosis of cancer.
What are the risks of the AFP tumor marker test?
The AFP tumor marker test is a safe and simple procedure. The only risk is the slight discomfort of having blood drawn.
What are the limitations of the AFP tumor marker test?
The AFP tumor marker test is not a perfect test. It is possible for people with cancer to have normal AFP levels, and it is also possible for people without cancer to have elevated AFP levels. Therefore, the AFP tumor marker test should be used in conjunction with other diagnostic tests to confirm a diagnosis of cancer.