All pregnant women in the UK are offered antenatal screening tests*. Most women will be reassured by the results but some (approximately 5%) will be given a result that leads to decisions about diagnostic testing.
It is always your choice to have any test.
Diagnostic tests such as CVS and amniocentesis carry a small risk (approximately 0.5% or 1 in 200) of miscarriage which means the decision about whether to have them can be difficult. Unfortunately, there is no other way of knowing for sure whether your baby has a chromosomal syndrome or certain other genetic conditions.
*The types of screening tests offered to women may vary across the four countries of the UK.
*ultrasound scans can suggest there might be a condition (as in screening for Down’s syndrome) or confirm there is a condition (as in diagnosing spina bifida).
All tests should be fully explained to you by your doctor or midwife before you decide whether to have them.
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