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Fetal Medicine Services

Fetal Diagnosis

Invasive Procedures we offer

  • CVS
  • Amniocentesis
  • Cordocentesis
  • Fetal Blood transfusions
  • Fetoscopic laser ablation for TTTS
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Call us on 011-29873018 to request an appointment or speak with a fetal specialist.

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  • Home >  Non-invasive Prenatal Test
  • Non-invasive Prenatal Test
    What is NIPT?

    During pregnancy, some of the DNA from the baby crosses into mom’s bloodstream. DNA is organized in structures known as chromosomes, which carry the baby’s genetic information. There are several NIPT companies available in the market. As most of the companies are not from India, we allow the patients to decide which company their blood will be sent to, providing that company provides fetal fraction.

    What does the NIPT test tell me?

    Most people have 23 pairs of chromosomes for a total of 46 — two copies of each set. The NIPT test is highly effective in determining if there is only one chromosome where there should be a pair, or if there is an extra chromosome, especially for the chromosomes that are responsible for Down syndrome, Edwards syndrome, Patau syndrome and certain sex chromosome trisomies. Panorama can also identify if there are three sets of each chromosome, which is known as triploidy.

    • A trisomy occurs when there is an extra copy of any one chromosome — 3 copies instead of 2.
    • A monosomy occurs when there is a missing copy of any one chromosome — 1 copy instead of 2.
    • Triploidy occurs when there are 3 copies of all the chromosomes.
    What are the current methods of screening?

    At present there are 2 options to ascertain the chromosome health of a fetus in pregnant women:

    • Non-invasive Method. e.g. Combined test
    • Invasive Method. This is a diagnostic test with 100% detection for the aneuploidies but there is a small risk of miscarriage. e.g. CVS and amniocentesis.
    How is the NIPT test helpful?

    The NIPT test will help women decide if they want a CVS or amniocentesis to confirm chromosomal abnormalities after a positive screen result or abnormal scan findings. Amniocentesis and CVS are invasive tests and carry a small risk of miscarriage.

    Most women who have the NIPT test will probably find out their baby is at low risk for the conditions tested. This means that the chance of the baby having one of these conditions is very low, which can be reassuring. When the test result shows a high risk, it is important to talk with your doctor about your next steps.

    Why NIPT?
    At present this is the best method for screening for Down syndrome.

    What is Fetal Fraction?

    Maternal blood contains circulating cell-free DNA fragments originating from both the mother and the placenta. The proportion fetal DNA derived from the placenta with respect to total amount of cfDNA is known as the fetal fraction.

    Why is Fetal Fraction important?

    Fetal fraction of DNA in the mother’s blood can vary greatly throughout gestation; it does tend to be lower earlier in the pregnancy. By using SNP technology, the Panorama prenatal test has extremely low error rates even at low fetal fractions and can be used as early as 9 weeks gestational age.

    Fetal Medicine Services

    Fetal Diagnosis

    Invasive Procedures we offer

    • CVS
    • Amniocentesis
    • Cordocentesis
    • Fetal Blood transfusions
    • Fetoscopic laser ablation for TTTS
    Read More

    Contact Us

    Contact Us

    Call us on 011-29873018 to request an appointment or speak with a fetal specialist.

    You can also use our online appointment form or send us a message using our contact us form

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