What is a Double Marker Test?
The Double Marker Testis a prenatal screening test performed during the 10th to 14th week of pregnancy. It assesses the risk of chromosomal abnormalities, such as Down syndrome, and detects potential hormonal imbalances in the developing fetus. The test measures two key substances in the mother's blood:
- Human Chorionic Gonadotropin (hCG)
- Pregnancy-Associated Plasma Protein-A (PAPP-A)
Abnormal levels of these substances may indicate an increased risk of chromosomal conditions or developmental issues in the fetus. This test is optional and is not a diagnostic tool but rather a screening method to identify the need for further testing.
Why is a Double Marker Test Performed?
The first-trimester screening (dual marker test and NT scan) is optional. But, if you're over 35 or have a family history of specific illnesses, the screening (and others like the cell-free DNA test) is suggested.
Understanding that the result merely tells you if you have a higher chance of trisomies is essential. It does not determine whether or whether your baby has any abnormalities.
When deciding whether or not to have a double marker test, consider what the findings might imply to you in the long term.
- Does learning about probable anomalies make you feel better or worse?
- Would you want to undergo more intrusive testing if the results indicated a higher risk?
- Would the findings affect how you manage your pregnancy?
It all depends on personal choice and individual medical history.
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Get A Second OpinionHow is the Double Marker Test Done?
The double marker test is a basic blood test that does not require fasting. Unless otherwise indicated by your doctor, you can eat or drink normally before your visit. The blood sample is analyzed to measure hCG and PAPP-A levels.
Why is a Double Marker Test in Pregnancy Conducted?
The test helps to:
- Identify potential chromosomal abnormalities such as trisomy 21 (Down syndrome), trisomy 13, and trisomy 18.
- Provide early information to guide further testing and decision-making.
- Offer insights into the health and development of the fetus during early pregnancy.
This test allows parents and healthcare providers to plan additional diagnostic tests or treatments if necessary.
Double Marker Test Results
- Low Risk (Negative): Indicates that your baby is unlikely to have chromosomal abnormalities. No further testing may be required unless other factors (age, family history) are present.
- High Risk (Screen-Positive): This indicates a higher likelihood of abnormalities. For confirmation, additional tests, such as Non-Invasive Prenatal Testing (NIPT), amniocentesis, or chorionic villus sampling, may be recommended.
It's important to note that this test does not screen for all possible conditions, If your screening results show that you are at moderate or high risk for abnormalities ("screen-positive"), you should consult a genetic counselor to learn more.
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Book an AppointmentNT Scan and Double Marker Test Price
The price of an NT scan and double marker test varies depending on the location and diagnostic facility. Medicover Hospitals aims to provide affordable and accurate diagnostic services. For detailed pricing, contact your nearest Medicover branch.
Is there any Risk in Using the Double Marker Test?
The Double Marker Test is entirely safe, non-invasive, and risk-free. It involves drawing a small amount of blood, making it suitable for all expectant mothers.
