11 doctors weighed in:
When will my doctor do an amniocentesis?
11 doctors weighed in

Dr. Pam Yoder
Obstetrics & Gynecology - Maternal Fetal Medicine
5 doctors agree
In brief: If YOU approve
Amniocentesis is an invasive procedure.
There are risks. Getting certain information is the benefit. In all cases a pregnant woman should be told the risks and benefits for her and her baby. She should be able to ask the doctor how many procedures he/she has done in cases like hers (gestational age, amount of fluid, baby and placenta position, etc). Only then should she decide whether to proceed.

In brief: If YOU approve
Amniocentesis is an invasive procedure.
There are risks. Getting certain information is the benefit. In all cases a pregnant woman should be told the risks and benefits for her and her baby. She should be able to ask the doctor how many procedures he/she has done in cases like hers (gestational age, amount of fluid, baby and placenta position, etc). Only then should she decide whether to proceed.
Dr. Pam Yoder
Dr. Pam Yoder
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Dr. Padmavati Garvey
Obstetrics & Gynecology
2 doctors agree
In brief: 16 weeks
Typically they are done at 16 weeks.

In brief: 16 weeks
Typically they are done at 16 weeks.
Dr. Padmavati Garvey
Dr. Padmavati Garvey
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Dr. Andrew Silverman
Fertility Medicine
1 doctor agrees
In brief: Time Amniocentesis
The amniocentesis is usually performed at 16 weeks from the last menstrual period.
A small portion of amniotic fluid and cells are removed. Analysis will give a chromosome picture of your baby, and will detect chromosome abnormalities.

In brief: Time Amniocentesis
The amniocentesis is usually performed at 16 weeks from the last menstrual period.
A small portion of amniotic fluid and cells are removed. Analysis will give a chromosome picture of your baby, and will detect chromosome abnormalities.
Dr. Andrew Silverman
Dr. Andrew Silverman
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Dr. Sheila Goodman
Obstetrics & Gynecology
In brief: 16-18 weeks
Amniocentesis is generally done only on women who are at increased risk for a genetic problem like down's syndrome, based on age, family history or other genetic testing.
Genetic amnios are done around 16-18 weeks and carry about a 1in 300 chance of miscarriage related to the procedure. Amnios are sometimes done later for infection or testing to see if it would be ok to deliver the baby early.

In brief: 16-18 weeks
Amniocentesis is generally done only on women who are at increased risk for a genetic problem like down's syndrome, based on age, family history or other genetic testing.
Genetic amnios are done around 16-18 weeks and carry about a 1in 300 chance of miscarriage related to the procedure. Amnios are sometimes done later for infection or testing to see if it would be ok to deliver the baby early.
Dr. Sheila Goodman
Dr. Sheila Goodman
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Dr. Braden Richmond
Obstetrics & Gynecology
In brief: It depends
If the amniocentesis is for genetic screening, it is usually done at 14-15 weeks.
If it is for fetal lung maturity, it may depend on the indication, but usually 36 weeks.

In brief: It depends
If the amniocentesis is for genetic screening, it is usually done at 14-15 weeks.
If it is for fetal lung maturity, it may depend on the indication, but usually 36 weeks.
Dr. Braden Richmond
Dr. Braden Richmond
Thank
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