tayadesign.blogg.se - Amniotic fluid test

The result is usually available with 24-48 hours. This is a special test which can be performed on uncultured amniocentesis or CVS samples. Picture of a normal karyotype (left) and Down syndrome karyotype (right) What is the FISH Test?įISH stands for Fluorescence In Situ Hybridisation. The laboratory charges an extra cost for this FISH test.

It is possible to obtain a partial result within 24 to 48 hours. When there are sufficient cells to analyse the laboratory will issue a result, referred to as a karyotype. Fetal cells within the fluid are grown in an incubator until there are sufficient cells to analyse (this takes approximately 10 days). This is sent to a specialised genetic testing laboratory. A small amount of the amniotic fluid which surrounds the baby is withdrawn. It involves performing an ultrasound and then using the ultrasound to guide a needle through the mother’s abdomen.

Occasionally, amniocentesis is performed for other reasons, particularly if an abnormality is found at the second trimester ultrasound.Īmniocentesis is a test performed to assess the chromosomes of the fetus.

Families in which there are other inherited genetic diseases.

Women who already have had a child with a chromosomal abnormality such as Down syndrome.

Women who are over the age of 37 years (some other states and countries suggest 35 years) at the estimated date of delivery.

Women who have had a high risk screening test result suggesting that the fetus has an increased risk of a chromosomal abnormality.

Are there any complications from having an amniocentesis?.