The test, analyses the presence and quantities of the following three hormones as part of Triple Screen Test that are produced during pregnancy:
If additional test for Inhibin A (a placenta-produced hormone) is added to the Triple Screen; then, it is called a Quad Screen Test.
All pregnant women in the second trimester (between weeks 15 and 22) are tested. Those in the following categories are at a higher risk:
Note: The test is most accurate when pregnant women are tested between gestation weeks, 16 and 18.
Sample required: Blood
Process: Insertion of needle into a vein (arm).
Preparation required: None
The tests are not diagnostic in nature; positive results indicate that further examinations (imaging studies, amniocentesis) are required to analyze the condition and confirm disorders (if any).
Since various factors (age, family background, gestation week of the pregnant woman, etc.) are involved in interpreting the test result, not all cases of elevated levels of tested proteins mean a presence of abnormalities. It is also important to note that not all fetal abnormalities may be revealed during this test.
A genetic counselor or a medical practitioner is best positioned to interpret the results and make suitable recommendations.
The laboratory test results are NOT to be interpreted as results of a "stand-alone" test. The test results have to be interpreted after correlating with suitable clinical findings and additional supplemental tests/information. Your healthcare providers will explain the meaning of your tests results, based on the overall clinical scenario.
Many factors should be considered before interpreting the results of Triple or Quad Screen Test. It is highly advised to determine factors, such as:
And ascertain all other relevant factors, prior to performing the screening and interpreting test results.
Certain medications that you may be currently taking may influence the outcome of the test. Hence, it is important to inform your healthcare provider, the complete list of medications (including any herbal supplements) you are currently taking. This will help the healthcare provider interpret your test results more accurately and avoid unnecessary chances of a misdiagnosis.
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