Tests and Scans

Step 3 Tests and Scans
As part of the One to One maternity service, you will be offered all the routine antenatal tests and scans to monitor the health and wellbeing of you and your baby. 

We have access to technology for diagnostics, enabling One to One to carry out all blood tests, ultra sound scanning and screening tests in a community setting. 

Our locally based Advice Centres are open from Monday to Saturday ensuring that a midwife is always on hand to give you the care and advice you need. Our flexible, accessible approach ensures that you can visit our community clinics at a time that suits you. 

By offering our care closer to home we keep hospital visits to a minimum - and when you do go for a hospital visit, your One to One midwife will be by your side to offer their care and support. 

With the NHS, the usual schedule for antenatal appointments is between 8-10 visits throughout your pregnancy lasting around 10-15 minutes. However, our enhanced resources allow One to One to arrange antenatal appointments that are as often and as long as you want and need them to be.

Antenatal Screening and investigations

Screening tests are used to find people at higher risk of a health problem. This means they can get earlier, potentially more effective treatment, or make informed decisions about their health.

Screening tests are not perfect. Some people will be told that they or their baby are at high risk of having a health problem when in fact they do not have a problem. Also a few people will be told that they or their baby are at low risk of having a health problem when in fact they do have a problem. If you or your baby is identified as being in a high risk group for a certain condition you will then be offered a diagnostic test to confirm whether you or your baby does have the condition being screened for.

For further information on all your screening tests please follow the National links below:


Ultrasound Scans

You will also be offered ultrasound scans on the following occasions:

- To date your pregnancy
- For combined screening
- Anomaly scan

For further information please follow the link below:


Blood tests

During your pregnancy you will be offered a number of blood tests (booking bloods), which can help protect you and your baby. Most of these tests can be taken together and usually early on in your pregnancy.

Please follow the link below for further information:


Your One to One midwife will discuss these tests with you, ensuring that you fully understand the reasons why the tests are being completed she will then ask you to sign a consent form if you wish to accept them.

The test results are confidential and only healthcare professionals closely involved in your care will be informed of your results.

You may be offered further tests in pregnancy, which your midwife will discuss with you at the time.

Antenatal Screening and Investigations Consent Form Antenatal Screening and Investigations Consent Form (125 KB)

The National Congenital Anomaly and Rare Disease Registration Service (NCARDRS)

"The National Congenital Anomaly and Rare Disease Registration Service (NCARDRS) records those people with congenital abnormalities and rare diseases across the whole of England.

This registration service:

- Provides a resource for clinicians to support high quality clinical practice 
- Supports and empowers patients and their carers, by providing information relevant to their disease or disorder 
- Provides epidemiology and monitoring of the frequency, nature, cause and outcomes of these disorders 
- Supports all research into congenital anomalies, rare diseases and precision medicine including basic science, cause, prevention, diagnostics, treatment and management 
- Informs the planning and commissioning of public health and health and social care provision 
- Provides a resource to monitor, evaluate and audit health and social care services, including the efficacy and outcomes of screening programmes

Public Health England (PHE) has expanded congenital anomaly and rare disease registration to cover the whole population of England, to meet national requirements for high quality public health disease surveillance identified by the Chief Medical Officer. The creation of the NCARDRS is part of the UK Rare Disease Strategy and the Department of Health 2020 Vision on Rare Diseases."

The link to the information leaflet is below:


Information to Opt Out:

NCARDRS hopes to register everyone who has a rare disease or congenital anomaly to help plan and improve healthcare services for future generations. However, individuals can ask to have all their details removed from the National Congenital Anomaly and Rare Disease Registration Service at any time.

These requests will not affect treatment or care.

To opt out, please email optout.ncardrs@phe.gov.uk or write to:

National Congenital Anomaly and Rare Disease Registration Service Director
Public Health England 
Skipton House 
Second Floor 
80 London Road
London, SE1 6LH