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What is the substance known as the carcinoembryonic antigen?
CEA is a substance which is normally found only during fetal development, but may reappear in adults who develop certain types of cancer.
What is the zone of equivalence in precipitation test?
The zone of equivalence in a precipitation test refers to the point at which optimal amounts of antigen and antibody have reacted together to form a visible precipitate. This zone indicates the point where antibody and antigen are present in the right proportions for a reaction to occur. Outside this zone, either excess antigen or excess antibody may hinder the formation of a visible precipitate.
Hemagglutination-inhibition test description?
It is the measures of the ability of soluble antigen to inhibit the agglutination of antigen-coated red blood cells by antibodies. In this test, a fixed amount of antibodies to the antigen in question is mixed with a fixed amount of red blood cells coated with the antigen (research on passive hemagglutination). Also included in the mixture are different amounts of the sample to be analyzed for the presence of the antigen. If the sample contains the antigen, the soluble antigen will compete with the antigen coated on the red blood cells for binding to the antibodies, thereby inhibiting the agglutination of the red blood cells.
What does typhi h and o mean in widal test?
In a Widal test, "H" refers to the flagella antigen of Salmonella typhi while "O" refers to the somatic antigen of the bacteria. The presence of antibodies against these antigens indicates a recent or current infection with Salmonella typhi, the bacterium that causes typhoid fever.
What is a monovalent antigen?
A monovalent antigen is a type of antigen that contains only one type of epitope, which is the specific molecular structure that can be recognized by the immune system. This means that the antigen can only trigger a response from one type of antibody.
What is the meaning of -ceas?
carcinoembryonic antigen, it is a tumor marker test.
Do you need to fast before cea test?
No, fasting is not required for a CEA (carcinoembryonic antigen) test. It is a simple blood test that can be done at any time of the day.
What are the antigens?
There are two common oncofetal antigens, alphafetoprotein (AFP) and carcinoembryonic antigen (CEA). Carcinoembryonic antigen CA 72-4 is a more recently discovered oncofetal antigen just coming into usage.
What are the oncofetal antigens?
There are two common oncofetal antigens, alphafetoprotein (AFP) and carcinoembryonic antigen (CEA). Carcinoembryonic antigen CA 72-4 is a more recently discovered oncofetal antigen just coming into usage.
What is an antigen tumor marker that is often elevated in patients with colon cancer?
carcinoembryonic antigen (CEA)
What is carcinoembryonic antigen?
It is a tumor marker for cancer of the colon and rectum
What is a CEA test?
carcinoembryonic antigen, it is a tumor marker test.
How conclusive is the carcinoembryonic antigen test?
But it does not give clear-cut information. The results of a CEA test are usually considered along with other laboratory and/or imaging studies to follow the course of the disease.
What does CEA levels mean?
CEA is an acronym for carcinoembryonic antigen. Doctors will test the blood for CEA levels if they suspect cancer or to see if cancer treatment is helping.
What color tube is used for the cea test?
A red-top tube is typically used for the CEA (carcinoembryonic antigen) test. This tube does not contain any anticoagulants and is used for serum collection.
A patient with what condition is most commonly given the CEA test?
The CEA test is most commonly ordered when a patient has a cancer of the gastrointestinal system.
Is a creatinine serum test and CEA the same thing?
No. CEA stands for Carcinoembryonic antigen. It is something that is supposed to be in the fetus but no in adults unless they have cancer or are heavy smokers. It is mainly used to keep track of the progression of cancer. Serum creatinine is a breakdown product of muscles and is mainly used to evaluate kidney function.
