Counterimmunoelectrophoresis
Counterimmunoelectrophoresis is a laboratory technique used in immunology to detect the presence of specific antigens or antibodies in a patient's serum. This method is based on the principle of electrophoresis, a process that separates charged particles in a fluid using an electric field. In counterimmunoelectrophoresis, antigens and antibodies are placed in separate wells in an agarose gel, and an electric current is applied. The antigens and antibodies migrate towards each other, and if they are specific for each other, they will form a visible line of precipitation in the gel.
Procedure[edit | edit source]
The procedure for counterimmunoelectrophoresis involves several steps. First, the patient's serum is mixed with a specific antigen or antibody in a test tube. This mixture is then placed in a well in an agarose gel. An electric current is applied, causing the antigens and antibodies to migrate towards each other. If the antigen and antibody are specific for each other, they will form a visible line of precipitation in the gel. This line is a positive result, indicating the presence of the specific antigen or antibody in the patient's serum.
Applications[edit | edit source]
Counterimmunoelectrophoresis is used in various fields of medicine, including infectious disease, immunology, and oncology. It is particularly useful for detecting specific antigens or antibodies in a patient's serum, which can help in the diagnosis of various diseases. For example, it can be used to detect the presence of hepatitis B surface antigen in a patient's serum, which is an indicator of hepatitis B infection.
Advantages and Disadvantages[edit | edit source]
One of the main advantages of counterimmunoelectrophoresis is its sensitivity. It can detect very small amounts of specific antigens or antibodies in a patient's serum. However, it also has some disadvantages. For example, it requires a relatively large volume of serum, and it can be time-consuming and labor-intensive.
See Also[edit | edit source]
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Contributors: Prab R. Tumpati, MD
