How long does dating ultrasound take

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Back to Your pregnancy care. If you're pregnant in England you'll be offered an ultrasound scan at around 10 to 14 weeks of pregnancy. This is called the dating scan. It's used to see how far along in your pregnancy you are and check your baby's development. The scan may also be part of a screening test for Down's syndrome.

Your midwife or doctor will book you a dating scan appointment. It will usually take place at your local hospital ultrasound department. Most scans are carried out by sonographers. You may need to have a full bladder for this scan, as this makes the ultrasound image clearer. You can ask your midwife or doctor before the scan if this is the case. The dating scan usually takes about 20 minutes. Find out more about what happens during a pregnancy ultrasound scan. If you're well, it's really important you go to all your appointments and scans for the health of you and your baby.

If you're pregnant, hospitals and clinics are making sure it's safe for you to go to appointments. They will advise you what to do. This scan can detect some health conditions, such as spina bifida. This depends on whether you have agreed to have the screening and when the scan takes place. Screening for Down's syndrome will happen at the dating scan if:. The screening test for Down's syndrome used at this stage of pregnancy is called the combined test.

It involves a blood test and measuring the fluid at the back of the baby's neck nuchal translucency with an ultrasound scan. This is sometimes called a nuchal translucency scan. The nuchal translucency measurement can be taken during the dating scan. If you have agreed to have screening for Down's syndrome, the dating scan and the screening will usually happen at the same time. Find out more about the screening for Down's syndrome, Edwards' syndrome and Patau's syndrome. You will not be offered the combined screening test if your dating scan happens after 14 weeks. Instead, you'll be offered another blood test between 14 and 20 weeks of pregnancy to screen for your chance of having a baby with Down's syndrome.

This test is not quite as accurate as the combined test. You can also read Public Health England's information about screening tests for you and your baby. last reviewed: 18 December Next review due: 18 December Home Pregnancy Your pregnancy care Back to Your pregnancy care.

Find out more about what happens during a pregnancy ultrasound scan Important: Coronavirus COVID update If you're well, it's really important you go to all your appointments and scans for the health of you and your baby.

How long does dating ultrasound take

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Dating Scan