The double marker test helps identify chromosomal abnormalities in a foetus. During this test, doctors measure two specific markers in the mother's blood whose abnormal levels may indicate a higher risk of chromosomal disorders like Down syndrome. This test is typically done in the first trimester. It allows for prompt detection of potential issues, helping doctors and parents prepare for or manage any complications that might arise during the pregnancy or after the child's birth.
Read on to understand the double marker test meaning in detail.
What a Double Marker Test Is
You may be wondering what a double marker test in pregnancy means.
The double marker means a predictive test commonly used during the first trimester of pregnancy to assess the likelihood of chromosomal abnormalities. This test measures the blood levels of two specific proteins:
- free beta-human chorionic gonadotrophin (beta-hCG) and
- pregnancy-associated plasma protein A (PAPP-A)
In a typical pregnancy, female fetuses have 22 pairs of XX chromosomes, and male fetuses have 22 pairs of XY chromosomes. However, sometimes, an extra chromosome appears, leading to a condition called trisomy. For example, Down syndrome, or trisomy 21, involves an additional copy of chromosome 21. Other common trisomies include trisomy 18 (Edward's syndrome) and trisomy 13 (Patau's syndrome), each resulting from an additional copy of chromosomes 18 and 13.
In pregnancies with these chromosomal abnormalities, the levels of hCG and PAPP-A in the blood may be higher or lower than average. To produce accurate results, the double marker test combines these blood levels with an ultrasound called a nuchal translucency (NT) scan, which examines the clear tissue at the back of the baby's neck. Together, these assessments help predict the likelihood of chromosomal abnormalities.
It is essential to understand what a double marker scan means, especially if expecting.
Conclusion
In this blog, we delved into what a double marker blood test means. Understanding the dual marker test meaning is essential to gauge how the results could affect you emotionally and in planning for any potential outcomes. Investing in health insurance can help in this regard. Health insurance assures peace of mind by covering medical expenses associated with pregnancy, ensuring access to timely healthcare without the burden of unexpected costs. It safeguards not only your health but also that of your family, offering peace of mind during unforeseen medical emergencies or routine healthcare needs.
Disclaimer: The information provided in this blog is for educational and informational purposes only. It is not intended as a substitute for professional advice, diagnosis, or treatment. Please consult your general physician or another certified medical professional for any questions regarding a medical condition. Relying on any information provided in this blog is solely at your own risk, and ICICI Lombard is not responsible for any effects or consequences resulting from the use of the information shared.