A triple screen test is a safe
prenatal test
that helps to identify problems in your baby, such as Down Syndrome. It does not necessarily diagnose a problem or abnormality, but it identifies if further tests need to be done. This screening involves the testing of three substances in your body: alpha-fetoprotein,
hcg
(human chorionic gonadotropin) and unconjugated estriol (a form of estrogen) to determine an abnormality in your baby.
The results of the triple screen test are used in conjunction with your age, weight, ethnic background and gestational age of your baby.
How is This Test Conducted?
This is done by drawing blood, and sending it to a lab for testing. If any of the above three mentioned substances show an abnormality, further testing is usually recommended. Abnormal results do not necessarily mean that your baby may have a problem. It is just a possibility.
When is a Triple Screen Test Done?
This prenatal test is usually conducted between
week 16
and
week 18
of a pregnancy for optimal accuracy.
Who is This Recommended For?
This test is recommended for pregnant women who:
* Are
over the age of 35
* Have a family history of babies with defects
* Had a virus while pregnant
* Have
diabetes
* Use drugs
What do Abnormal Results Mean?
The triple screen test is not diagnostic, which means that it is not meant to diagnose a condition. It only provides initial information that will signify if further testing is required or not. It is important to note that this screening is known to have a high percentage of false-positives. This means that a possible abnormality has been identified, when in fact there is nothing wrong with the baby.
Abnormal test results could signify a possibility of neural tube defects such as spina bifida, or chromosomal abnormalities such as Down Syndrome.
These screening tests are not mandatory, and do not have to be done if you do not feel comfortable doing it.