How far along in pregnancy does a woman have to be before they would do amniosynthesis?

Answer 1

depends on the reason but 16wks plus

Answer 2

It depends on the pregnancy. Some women will never have to have it done. I am 37 and pregnant with my 4th child. So far, I have been lucky and never needed one.

If it's used for genetic reasons, to test for Down's or other brith defects, it's usually performed between 15-18 weeks. Since it takes a few weeks to get the results this still gives the parents the option to terminate if they choose. But some may also have an amnio later in the pregnancy if it looks like the woman may go into pre-term labor. Amnio is used in this case to check the maturity of the lungs and other organs.

Answer 3

For genetic testing, chromosome analysis, and evaluation of an abnormal AFP test, amniocentesis is usually performed between the 15th and the 18th week of pregnancy. Some physicians perform "early amnio" at 13 weeks or even sooner. There is a higher rate of miscarriage associated with these very early tests. However, early tests can provide information sooner which may be helpful to the parents. There is no time limit as to how late in the pregnancy amniocentesis can be performed.

If amniocentesis is performed to determine fetal lung maturity, it is often done anywhere between the 32nd and 36th week of pregnancy. In diabetic women, lung maturity testing may be done as late as the 39th week, because poorly controlled diabetes may delay fetal lung maturity

Answer 4

I think you mean amniocentesis, where the doctor uses a needle to draw out a sample of amniotic fluid.

This usually isn't done until the second trimester (4-6 months), and is typically an optional procedure for mothers with family history of certain genetic disorders.

Answer 5

5 months...there is a 1 in 200 risk of mscarriage when having an amniocentisis

Answer 6

the do that test between 14 to 16 weeks into the pregnancy i have to have one done next week due to medication i was on