Amniocentesis
Amniocentesis is a prenatal diagnostic procedure in which a small amount of amniotic fluid is taken from the sac surrounding the baby under continuous ultrasound guidance. Fetal cells present in the amniotic fluid can be analysed for chromosomal and genetic changes detectable by the selected laboratory test.
Amniocentesis may be considered if:
- a screening test performed during pregnancy indicates an increased risk of a chromosomal or genetic condition;
- an ultrasound examination identifies an abnormality or a feature suggestive of a genetic condition;
- the mother, the baby’s father or a close relative has a chromosomal or genetic condition;
- a child with a genetic condition has previously been born in the family;
- after counselling, the expectant mother wishes to obtain a diagnostic result for selected chromosomal or genetic changes.
Amniocentesis is also available upon request. No referral or increased risk identified by a screening test is required. The procedure is preceded by a detailed ultrasound examination and counselling, during which we discuss the benefits and limitations of the procedure, the associated risks and the most appropriate laboratory tests.
Amniocentesis provides a diagnostic result for the specific changes assessed by the selected laboratory test. A normal result cannot exclude all possible genetic conditions or fetal structural abnormalities, nor can it guarantee the birth of a completely healthy child.
According to current evidence, the additional risk of miscarriage associated with amniocentesis performed by an experienced specialist is approximately 0.1%, or about 1 in 1,000.
The best time to perform amniocentesis is generally between 16 and 18 weeks of pregnancy.
The turnaround time for the result depends on the selected chromosomal or genetic analysis.
The price of amniocentesis also includes an ultrasound examination to assess the fetus for signs of genetic conditions.