- Tel: 020 8546 7711
All women will be sent the National booklet: ‘Screening tests for you and your baby’
It is important that you read the booklet and inform your midwife of any relevant conditions that may occur in you, your partner or your immediate families.
You will be routinely offered two scans during your pregnancy. The first scan is offered between 11+0 and 13+6 weeks of the pregnancy and the purpose of this scan is to:
The second scan offered is between 18+0 – 20+6 weeks of the pregnancy and the purpose of this scan is to:
If any issues are raised from this scan, arrangements will be made to discuss the findings with your obstetric consultant or a specialist.
In some pregnancies your Obstetrician will recommened additional scans.
You will be offered a number of blood tests at your booking appointment, which we encourage you to have. Blood tests are a way of checking yours and your baby’s health. If any of the results were to show you or your baby were at risk, or affected, we can then provide the adequate care and treatment, if necessary.
You will be offered screening for Down’s Syndrome at your first scan. The screening test is able to provide specific information about your chance of having a baby affected with Down’s syndrome. The ‘Combined test’ is offered to all women under 14+1 weeks of pregnancy and involves measuring three markers in relation to the pregnancy. The markers are:
If you haven't been able to have the combined test, we are still able to offer you a screening test for Down’s syndrome. This is known as the ‘Quadruple’ test and it is offered between 14+2 and 20 weeks of pregnancy. As the name suggests, it is measuring 4 serum markers in the mother’s blood. Both of these tests are processed by the Wolfson laboratory:
The results from all of these markers are processed by a specific computer programme to generate the likelihood of having a baby with Down’s syndrome. Any number that is below 1 in 150 means that there is a higher chance of the baby having Down’s syndrome and you will be offered further testing, if you wished. Numbers that are above 1 in 150, means that there is a lower chance of the baby having Down’s syndrome. However, it has to be remembered that a screening test cannot diagnose Down's Syndrome. If the result is ‘high’ the screening midwives will contact you to discuss the implications of the result and your options.
There are a number of private clinics in London offering screening tests and scanning. If you are considering a private test, please contact the Screening Midwives on 0208 934 6440 to discuss further.