What are antenatal tests?

Antenatal tests help make sure that you and your baby are healthy throughout your pregnancy. Antenatal tests are an important part of your pregnancy care.

What is a screening test?

Some antenatal tests are screening tests. This means that they are designed to estimate the chance of you or your baby having a particular condition.

What is a diagnostic test?

A diagnostic test can tell you for certain whether your baby has a condition. If you receive a high-risk result on a screening test, you might be referred for a diagnostic test.

Which antenatal tests are offered during pregnancy?

There are different types of antenatal tests offered during pregnancy.

Here is a summary of some of the antenatal tests offered during pregnancy in Australia:

Name	Type of test	What does it check for?	When is it done?
Infectious diseases screen	Blood test	Immunity to, or presence of, infections such as syphilis, hepatitis, HIV and rubella	First antenatal visit
Blood group + antibodies	Blood test	Blood group and Rhesus negative status	First antenatal visit
Full blood count	Blood test	Anaemia	First antenatal visit Repeated at 26 – 28 weeks
Vitamin D level	Blood test	Vitamin D deficiency	First antenatal visit
Urine test and culture	Urine (wee) test	Infection or signs of abnormalities	First antenatal visit May be repeated during pregnancy
Mental health and social wellbeing screen	Questionnaire	Anxiety or depression Family violence	First antenatal visit May be repeated during pregnancy
Dating scan	Ultrasound scan	Estimated due date	Usually at 8 – 14 weeks
Nuchal translucency test	Ultrasound scan	Screens for genetic abnormalities	From after 11 weeks to before 14 weeks
Combined first-trimester screen (CFTS)	Ultrasound scan and blood test	Screens for genetic abnormalities	11 – 14 weeks
Non-invasive prenatal testing (NIPT)	Blood test	Screens for genetic abnormalities	From 10 weeks
Chorionic villus sampling (CVS)	Procedure	Diagnoses genetic abnormalities	From 11 weeks
Amniocentesis	Procedure	Diagnoses genetic abnormalities	From 15 weeks
Morphology scan	Ultrasound scan	Fetal growth and development Position of the placenta	18 – 22 weeks
Gestational diabetes screening	Blood test	Gestational diabetes	24 – 28 weeks
Group B strep screen	Vaginal or rectal swab	Group B strep	35 – 37 weeks

Why do I need tests during pregnancy?

Antenatal tests are an important way to check your own and your baby’s health and wellbeing throughout your pregnancy. Antenatal tests can help to:

• pick up medical problems early so they can be treated
• identify any genetic conditions affecting your baby, so you can decide what to do next
• check that your baby is growing and developing

It’s important to try to do the tests at the recommended time to make sure you get the most accurate information. The test results are used to help you and your healthcare team make any necessary decisions about your pregnancy.

Ask your doctor or midwife if you’re not sure when you need to have a particular test, or why it is recommended for you.

ASK YOUR DOCTOR — Preparing for an appointment? Use the Question Builder for general tips on what to ask your GP or specialist.

Do I have to have the routine antenatal tests?

During pregnancy, you and your doctor and midwife can decide together which tests you will have.

You will be given information about each test so you can make an informed decision.

You can choose whether to have antenatal tests. You may decide to have all the tests recommended or only a few.

It’s a good idea to think about the possible results of antenatal testing, and how you might feel when you get the results.

Many people find it helpful to ask questions and discuss their options with their doctor or midwife. You can talk to your partner, close family and friends to help you make choices that are right for you.

Be careful about following advice from the internet or social media since it may not be accurate.

Your doctor or midwife can answer your questions and give you accurate information and advice about your situation.

Questions for your doctor

Here are some questions you might want to ask your midwife or doctor:

• Why are you offering me this test?
• What does the procedure involve?
• Do I need to do anything on the day?
• When will I get the results?
• Who will contact me to give me the results?
• Do I need to do anything to care for myself after the procedure?

More questions to ask your doctor about tests and scans.

Who will do the tests?

Your doctor or midwife will refer you for any antenatal tests that are recommended.

Blood tests

Blood tests are usually done at a pathology collection centre or hospital by a trained pathology collector.

Ultrasound scans

Ultrasound scans are usually performed by a specially trained technician called a sonographer. They can also be done by doctors, midwives or other health workers. Scans may be performed in a radiology clinic or a hospital.

Specialist tests

Procedures such as chorionic villus sampling (CVS) and amniocentesis are done by a specialist doctor in a clinic or hospital.

FIND A HEALTH SERVICE — The Service Finder can help you find doctors, pharmacies, hospitals and other health services.

What do antenatal tests cost?

Medicare covers at least some of the cost of routine antenatal tests. You can get some money back or be bulk billed for many ultrasounds and blood tests.

However, not all antenatal tests are covered by Medicare. You may need to pay an out-of-pocket cost, depending on the test and where you get it done. Speak to your doctor if you are worried about the cost of antenatal tests.

It’s a good idea to check about the fees when you book your appointments.

What happens when I get the results?

Your doctor, obstetrician or midwife can answer your questions and give you more information about antenatal tests. They can also discuss the meaning of your test results.

They may also suggest talking to a genetic counsellor, who can guide you through the implications of your results, any decisions you may need to make and the relevant support available.

The best way to contact a genetic counsellor is to ask your doctor. They can refer you to a genetic counselling service.

The Human Genetics Society of Australasia also has a Find a Genetic Counsellor service. It can help you find a registered counsellor in your area.

Resources and support

For mental health support during pregnancy visit:

• PANDA (Perinatal Anxiety & Depression Australia) call: 1300 726 306
• Beyond Blue call: 1300 22 4636

Try the Australian government Medical Costs finder.

Watch a video about maternity care in Australia in your preferred language.