The Double Marker Test: A Helpful Way to Diagnose Down Syndrome

If you're looking to pinpoint a particular gene, the Double Marker Test is the perfect option for you! In this test, the results are quicker and more accurate, but the main downside is that it's more expensive than the Single Marker Test.

What is a Double Marker Test?

A double marker test is a prenatal test that screens for certain chromosomal abnormalities, such as Down syndrome. It is a blood test that measures the levels of two specific proteins in the blood - alpha-fetoprotein (AFP) and human chorionic gonadotropin (hCG). If the levels of these proteins are higher than normal, it may be an indication that the fetus has a chromosomal abnormality.

Everything You Need to Know About Double Marker Test

What is a double marker test?

A double marker test is a prenatal blood test that screens for certain birth defects. It measures two specific proteins in the blood: alpha-fetoprotein (AFP) and human chorionic gonadotropin (hCG). High levels of AFP and hCG may indicate that the baby has a birth defect, such as Down syndrome.

When is a double marker test done?

A double marker test is usually done during the second trimester of pregnancy, between 16 and 20 weeks.

What are the risks of a double marker test?

There is very little risk associated with a double marker test. However, as with any blood test, there is a small risk of bleeding or infection.

What are the benefits of a double marker test?

A double marker test can help determine whether a baby has a birth defect, such as Down syndrome. This information can help parents make decisions about their pregnancy.

Preparation of Double Marker Test

1. To prepare the double marker test, you will need a sterile container, a centrifuge, and a test tube.

2. Collect a sample of blood from the patient in the sterile container.

3. Centrifuge the sample to separate the serum from the blood cells.

4. Pour the serum into the test tube.

5. Add the appropriate amount of reagent to the test tube.

6. Mix the contents of the test tube.

7. Compare the colour of the solution to the colour chart provided to determine the results.

Uses of Double Marker Test

The double marker test is used to detect chromosomal abnormalities, including Down syndrome. It is a screening test that is used during pregnancy to determine if the fetus has an increased risk for certain chromosomal abnormalities.

Double Marker Test Procedure

A double marker test is a blood test used to screen for Down syndrome and other chromosomal abnormalities. It is a combination of two tests: the first tests for the presence of the hormone hCG in the blood, and the second tests for the presence of the protein pAFP.

The hCG test is used to detect the presence of the hormone human chorionic gonadotropin, which is produced by the placenta. The pAFP test is used to detect the presence of the protein alpha-fetoprotein, which is produced by the fetus.

If both the hCG and pAFP tests are positive, it indicates that the fetus has a chromosomal abnormality, such as Down syndrome. If either the hCG or pAFP test is positive, but not both, it indicates that the fetus has a specific chromosomal abnormality, such as Trisomy 18.

Double Marker Test Normal Value

A double marker test is a blood test used to screen for Down syndrome and other chromosomal abnormalities. The test measures the levels of two substances in the blood: alpha-fetoprotein (AFP) and human chorionic gonadotropin (hCG).

The normal value for a double marker test is less than 2.5.

Double Market Test Cost

1. The cost of a double market test is the same as the cost of a single market test.

2. The cost of a double market test is twice the cost of a single market test.

3. The cost of a double market test is four times the cost of a single market test.

The cost of a double market test is twice the cost of a single market test.

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