Routine multiple scans aren’t recommended unless medically necessary. In India, private clinics may suggest more ultrasounds than guidelines require, so it’s important to follow your doctor’s advice. A single, well-timed growth scan provides reassurance without unnecessary stress.
In this article:
What is a Growth Scan?
A growth scan, also called a foetal growth ultrasound, is a detailed check to see how well your baby is growing inside the womb. It usually measures:- Baby’s head circumference, abdominal circumference, and femur length
- Amniotic fluid levels
- Placental position and blood flow using Doppler studies
When is a Growth Scan Usually Done?
Growth scans are usually performed after 28 weeks of pregnancy, most often between 28 and 32 weeks.For most women, a single growth scan in the third trimester is enough, especially if the pregnancy is progressing normally. However, some women may need more than one scan, depending on their doctor’s advice and medical history.
Why Your Doctor Might Recommend a Growth Scan
Growth scans are not a routine part of every pregnancy in India. Instead, they are offered when there are specific medical reasons or risk factors. Your doctor may suggest a scan if:- Your baby is measuring smaller or larger than expected on physical examination.
- You have pre-existing conditions such as high blood pressure, thyroid issues, or diabetes.
- You had complications in a previous pregnancy (stillbirth, growth restriction, or preterm birth).
- You’re carrying twins or multiples.
- There are concerns about the placenta or amniotic fluid.
- You have risk factors like smoking, anaemia, or poor weight gain.
Early Growth Scans: Are They Needed?
Growth scans are not usually done before 28 weeks unless there are concerns.Earlier ultrasounds, like the dating scan (around 7–9 weeks) and anomaly scan (18–22 weeks), already give your doctor key information about your baby’s development. If your doctor suspects an issue before the third trimester (for example, reduced movements or abnormal blood tests), an early growth scan may be advised.
What Happens During the Scan?
The growth scan is similar to any other ultrasound—non-invasive and painless. A gel is applied to your abdomen, and the doctor or sonographer uses a probe to capture images of your baby. The scan usually takes 20–30 minutes.You’ll see measurements being taken on the screen and sometimes hear about percentile ranges. Doctors generally look for your baby to fall between the 10th and 90th percentile, meaning not too small and not too big for gestational age.
How Many Growth Scans Do You Need?
Know thisThe number of growth scans depends entirely on your pregnancy.
- Normal pregnancies: Usually 1 scan between 28–32 weeks
- High-risk pregnancies: May need scans every 2–4 weeks after 28 weeks
- Multiples (twins/triplets): More frequent monitoring may be required
Are There Risks with Growth Scans?
Ultrasound scans, including growth scans, are considered safe for both mother and baby. They do not use radiation. However, they should only be done when medically needed. Routine, unnecessary scans are not encouraged.Growth Scan in the Indian Context
In India, private clinics often promote multiple ultrasounds, but global guidelines (like those from the NHS, ACOG, and FOGSI) recommend scans only when medically justified. This ensures better use of resources, reduces costs, and avoids unnecessary anxiety. Always follow your doctor’s advice rather than the clinic packages.A growth scan is usually done in the third trimester (28–32 weeks), but may be repeated if your pregnancy requires closer monitoring. It helps ensure your baby is growing well, amniotic fluid levels are normal, and your placenta is functioning properly.
Always remember: not every mother needs multiple scans. Trust your doctor’s judgement, ask questions if you’re unsure, and know that one well-timed growth scan can provide valuable reassurance about your baby’s health.
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FAQs on When Should I Get a Growth Scan Done in Pregnancy?
- Do all pregnant women need a growth scan?
No. If your pregnancy is progressing normally and your doctor has no concerns, you may not need one. - Can a growth scan predict my exact due date?
No. Growth scans are not used to calculate due dates. They mainly assess size, weight, and development trends. - What if my baby measures small on a growth scan?
Don’t panic. One scan alone cannot diagnose growth restriction. Your doctor may schedule follow-up scans and Doppler studies to confirm. - Are growth scans safe for my baby?
Yes. Ultrasounds are non-invasive and safe, with no known risks for the mother or foetus. - How much does a growth scan cost in India?
In most private clinics, it ranges from ₹1,500 to ₹3,000, depending on the city and hospital.