Coombs Test Indirect (Gel Agglutination) - Price, Normal Range | Sprint Diagnostics Hyderabad

Patient Preparing : No fasting or specific preparation is required

₹ 2600


The Coombs Test - Indirect, performed using the Gel Agglutination method, is an important blood test that helps in the detection of antibodies in the plasma that can potentially bind to the surface of red blood cells. It plays a critical role in blood transfusion medicine and in the management of certain conditions during pregnancy, like Rh incompatibility.

Unlike the Direct Coombs Test, which tests for antibodies that are already attached to the red blood cells, the Indirect Coombs Test evaluates the presence of unbound antibodies in the patient’s plasma. Gel Agglutination is a method that enhances the sensitivity of the Indirect Coombs Test, making it more accurate in detecting antibodies.

Test Name Coombs Test - Indirect (Gel Agglutination)
Sample Type Blood
Preparations Required No fasting or specific preparation is required
Report Time 6 hours
Price ₹ 2600

What is the Indirect Coombs Test with Gel Agglutination?

The Indirect Coombs Test using Gel Agglutination is a sensitive method to detect antibodies in the plasma that can bind to red blood cells. It's mainly used in blood transfusion medicine and to screen for antibodies in pregnant women that may affect the fetus.

How is the Indirect Coombs Test performed using Gel Agglutination?

A blood sample is taken and the plasma is separated. The plasma is then mixed with red blood cells of known antigenic makeup in the presence of a special gel containing anti-human globulin. If antibodies are present in the plasma, they will bind to the red blood cells and clump together in the gel. This clumping is detected under a microscope.

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What does a positive Indirect Coombs Test indicate?

A positive result indicates the presence of antibodies in the plasma that can bind to red blood cells. This is important for blood transfusion compatibility and identifying potential risks to the fetus in pregnancy due to antibodies.

What does a negative Indirect Coombs Test mean?

A negative result suggests that there are no antibodies in the plasma that would bind to the red blood cells. This is generally an indication that the blood is compatible for transfusion or that there is a lower risk of hemolytic disease in the newborn due to maternal antibodies.

Why is the Gel Agglutination method used?

Gel Agglutination is used because it increases the sensitivity of the Indirect Coombs Test. It allows for more precise detection of antibodies, which is crucial for ensuring blood transfusion compatibility and assessing risks in pregnancy.

Are there any risks associated with the Indirect Coombs Test?

The risks are minimal and similar to those of a regular blood draw, such as slight pain, bruising, or bleeding at the site where the needle is inserted.

Can the Indirect Coombs Test be used during pregnancy?

Yes, this test is commonly used during pregnancy to screen for antibodies in the mother’s blood that might affect the fetus, especially in cases of Rh incompatibility.

Can medication interfere with the results of the Indirect Coombs Test?

Certain medications may affect the results of the test. It is important to inform your doctor of all medications and supplements you are taking before the test.

How does the Indirect Coombs Test differ from the Direct Coombs Test?

The Indirect Coombs Test detects antibodies in the plasma that can bind to red blood cells, while the Direct Coombs Test detects antibodies that are already bound to the surface of red blood cells.

What is the importance of blood compatibility testing?

Blood compatibility testing is crucial to ensure that the recipient’s immune system will not attack the transfused blood, which can lead to serious complications or even death.

Which doctor should be consulted in case of a positive Indirect Coombs Test?

A hematologist or a physician who specializes in blood disorders should be consulted if the Indirect Coombs Test is positive. Pregnant women may also need to consult their obstetrician.

The Indirect Coombs Test using Gel Agglutination is a sensitive and critical test used to detect antibodies in the plasma that can bind to red blood cells. This test is invaluable in ensuring the safety and compatibility of blood transfusions and in managing pregnancies where there is a risk of hemolytic disease of the newborn due to maternal antibodies. It is important for patients to consult their doctor for proper interpretation of the results and appropriate guidance.

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