how accurate is amniocentesis?

Question

Answer 1

100%: Amniocentesis is 100% accurate.

Answer 2

Very accurate: An amniocentesis samples the fetal dna from amniotic fluid. Because the test is sampling the baby's dna directly the test is extremely accurate.

Answer 3

Fluid taken from sac: Amnio is a test done at 15-20 wks of pregnancy to check if a fetus has a genetic disorder like down's syndrome.It is usually done for women >35 y/o or with a previous abnormal screening test like an msafp test or NT test.An ultrasound is done 1st to check the fetus, the fluid and placenta.A very thin needle is used to remove the fluid with ultrasound guidance.Anesthesia usually not needed.

Answer 4

Steps for amnio: Consent is obtained; questions are answered. Ultrasound is used to find best location for needle. Iodine is wiped on skin. Ultrasound is placed on abdomen again. Skin may or may not be numbed by injection. Amniocentesis needle (long but thin) is inserted through abdominal wall into amniotic sac. Syringe is attached; fluid is withdrawn. Heartbeat is checked. Skin is cleaned. Instructions are given.

Answer 5

Personal decision: Both tests are 100% accurate in determining whether or not the baby has chromosomal problems like down's syndrome. Women over 40 have a 1 in 20 risk of this. Some people would terminate the pregnancy if they knew the baby had a chromosomal problem. The cvs gives you info earlier than the amnio but has a higher miscarriage rate.

Answer 6

If at increased risk: It is only indicated and may be considered in which there is an increased risk of genetic disorder. If you are 35 or older by the time your baby is due if you previously had a baby with Down syndrome or another disoeder like spina bifida and you and your partner are known carriers of genetic disorder like cystic fibrosis.

Answer 7

No: Amniocentesis is usually offered between 15-20 weeks, with a pregnancy loss rate of about 1 in 300-500. Chorionic villus sampling (cvs) is offered after 9 weeks. The pregnancy loss rate appears to be about the same as amniocentesis. There are additional fetal risks if it is performed before 7 weeks. The benefit of cvs is earlier detection, which allows for safer termination, if desired.

Answer 8

Yes, if: Depending on when the amnio is done; if done at 16-18 weeks, the amnio risk is somewhat lower (around 1/200.).

Answer 9

Amniocentesis: Amniocentesis is the most accurate way to determine the baby's gender before birth, with about 99.4% accuracy.

Answer 10

Very accurate: Over 99%

Answer 11

Very accurate: Amniocentesis actually maps the tested chromosomes in detail in order to detect abnormalities.

how accurate is amniocentesis?

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