Dr. Sweta Bothra's Health Team is a group of fetal medicine specialists and medical writers dedicated to providing trusted information on pregnancy care, prenatal diagnosis, fetal imaging, and maternal health.
During pregnancy, women undergo many tests and screenings, and it can be difficult to understand which ones are important. NIPT is a non-invasive prenatal screening test that analyses cell-free DNA from the pregnancy in the mother's blood. It can screen for certain chromosomal conditions, but it cannot confirm whether your baby has one. A diagnostic test may be needed to confirm an abnormal result.
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The decision to have Non-Invasive Prenatal Testing in Siliguri should depend on your pregnancy, and you should discuss it with a qualified healthcare professional before choosing NIPT.
Read More: Non-Invasive Prenatal Testing Siliguri: Benefits, Cost & Accuracy
Understanding NIPT
NIPT stands for Non-Invasive Prenatal Testing. It is a prenatal screening test that is performed using a blood sample from the pregnant woman. The test analyses small fragments of cell-free DNA in the blood, much of which comes from the placenta.
NIPT is primarily used to screen for specific chromosomal conditions:
- Trisomy 21: Down syndrome
- Trisomy 18: Edwards syndrome
- Trisomy 13: Patau syndrome
Depending on the test, NIPT may also screen for sex chromosome differences and other conditions.
When Can NIPT Be Done During Pregnancy?
This test is generally done around 10 weeks of pregnancy. The timing matters because the test needs enough cell-free DNA from the placenta in the mother’s blood to produce a reliable result. An early NIPT may sometimes produce an inconclusive result if the blood sample does not contain enough placental DNA so another blood sample may be required. Your obstetrician can help you decide when to have NIPT based on your pregnancy and medical history.
Is NIPT Recommended for Every Pregnant Woman?
This test is not compulsory for every pregnancy. Women at different ages or risk levels may consider prenatal screening. However, the choice of having NIPT should be made after considering your pregnancy condition and discussing it with your healthcare professional.
Your doctor may consider factors such as:
- Maternal age
- Previous pregnancy history
- Family history
- Ultrasound findings
- Results of other prenatal screening tests
- Your personal preferences
- Test availability and counselling
What NIPT Can Tell You and What It Cannot
NIPT test gives helpful information, but does not give a complete picture of your baby's health. Let’s understand what it can and cannot tell you.
What NIPT Can Tell You
- Screen for certain chromosomal conditions.
- Estimate the likelihood of these conditions.
- Provide a low-risk or high-risk result.
- Help guide decisions about further testing.
- Provide information for prenatal counselling.
What NIPT Does Not Tell You
- It cannot confirm a diagnosis.
- It cannot detect every genetic condition.
- It cannot detect every birth defect.
- It cannot replace detailed ultrasound scans.
- It cannot replace routine prenatal care.
- It cannot guarantee that the baby has no health problems.
NIPT does not confirm a condition. A high-risk result should be followed by further evaluation and, if appropriate, diagnostic testing.
How to Choose a Reliable NIPT Provider in Siliguri
Before choosing an NIPT provider, here are the things you should look for and what you should avoid:
Things that you should look for:
- Choose a reliable laboratory or provider.
- Check which conditions the test covers.
- Make sure your blood sample is handled properly.
- Look for a qualified medical team.
- Ask for a clear and easy-to-read report.
- Check if counselling is available.
- Ask about the process for high-risk or no-result reports.
- Know when you will receive the results.
- Check what happens if a repeat sample is needed.
- Make sure your medical information stays private.
Avoid Choosing Based Only On:
- The lowest price
- The largest test panel
- Who gives you “100% accuracy”
- Promises that NIPT can detect every fetal condition
- Quick results without proper medical guidance
What Are the Benefits and Risks of NIPT?
Benefits of NIPT
- Non-invasive: Requires only a blood sample.
- Early screening: Usually available from around 10 weeks.
- High accuracy: Highly accurate for screening common trisomies.
- Common conditions: Screens mainly for trisomies 21, 18, and 13.
- Low physical risk: Does not involve entering the uterus.
- Simple process: Requires a routine blood draw.
- Risk assessment: Estimates the chance of certain chromosomal conditions.
- Guides next steps: May help determine whether further testing is needed.
- May reduce invasive testing: A low-risk result may reduce the need for some invasive tests.
- Fetal sex information: Some NIPT panels may include fetal sex information.
Risks and Limitations of NIPT
- Not a diagnostic test: This test does not confirm a chromosomal condition.
- High-risk result: The condition may not actually be present.
- Low-risk result: A small chance of the condition may remain.
- No result: Sometimes the test cannot produce a clear report.
- Repeat sample: You may need to give another blood sample.
- Limited screening: Does not cover every genetic condition or birth defect.
- Emotional stress: An unexpected result may cause worry.
- Further testing: A high-risk result may lead to CVS or amniocentesis.
- Cost: The test may add to pregnancy-related expenses.
At The End
NIPT offers useful information about certain chromosomal conditions, but it cannot confirm a condition or replace other important prenatal assessments. If you are considering Non-Invasive Prenatal Testing in Siliguri, speak with a qualified specialist to understand whether the test is suitable for your pregnancy, when to take it, and what the results may mean. Consult Dr Swetabothra for personalised guidance based on your pregnancy and medical history.
Frequently Asked Questions
How Accurate Is NIPT?
NIPT provides highly accurate screening test results for trisomies 21, 18, and 13. But a high-risk result doesn't confirm the condition; that's why other tests are required.
What Happens If NIPT Gives a “No Result”?
Sometimes it does not give a clear result; in those cases, other blood samples or further tests are required.
Is Ultrasound Still Important After NIPT?
Yes, NIPT is mainly a screen for chromosomal conditions, while ultrasound checks structural and developmental-related concerns.
Can NIPT Detect All Birth Defects?
No. NIPT cannot detect every birth defect or health condition. It mainly looks for certain chromosomal conditions, not all structural or developmental problems.
Can NIPT Confirm a Chromosomal Condition?
No. NIPT is a screening test, not a diagnostic test. It provides screening information, while CVS and amniocentesis can help confirm certain chromosomal conditions.
