Cells found in the fluid can be used to examine the baby's genes. The test may be done if your baby has a high risk of a birth defect. They can also show if the baby is developing as expected. Depending on your risk factors, cells in the amniotic fluid are tested for:
Be sure to discuss these risks with your doctor before the procedure.
What to Expect
You may be given a local anesthesia. This numbs a small area in the abdomen where the needle will be placed.
Description of the Procedure
will be used during the procedure. This will allow your doctor to see where the needle is. Your belly will be cleaned. A very thin needle will be inserted through your skin into your uterus. A few teaspoons of amniotic fluid will be removed and the needle will be pulled out. The doctor will make sure that your baby's heartbeat is normal.
How Long Will It Take?
About 45 minutes
Will It Hurt?
You may feel cramping when the needle enters your abdomen. You may also feel pressure when the fluid is withdrawn.
A test showing a healthy baby is ideal, but you will need to be prepared if the results are abnormal. If there is a disorder, further counseling can be helpful. Your doctor will work with you on options that are best for you after you know the results.
Chromosome (DNA) abnormalities. The results are usually ready within 14 days.
Inherited genetic diseases—Test results are usually ready in 1-5 weeks. Examples include:
Call Your Doctor
It is important to monitor your recovery. Alert your doctor to any problems. If any of the following occur, call your doctor:
Signs of infection, including fever and chills
Nausea or vomiting
Pain or cramping in your lower abdomen or shoulder
Vaginal bleeding or a leaking of fluid from the vagina
Redness, swelling, increasing pain, excessive bleeding, or discharge from the amniocentesis site
New, unexplained symptoms
If you think you have an emergency, call for medical help right away.
Chorionic villus sampling (CVS). American Pregnancy Association website. Available at: http://www.americanpregnancy.org/prenataltesting/cvs.html. Updated July 2015. Accessed March 14, 2015.
Hemolytic disease of the fetus and newborn (HDFN). EBSCO DynaMed Plus website. Available at:http://www.ebscohost.com/dynamed. Updated April 4, 2016. Accessed October 7, 2016.
Later childbearing. American College of Obstetricians and Gynecologists website. Available at: http://americanpregnancy.org/prenatal-testing/chorionic-villus-sampling. Updated July 2015. Accessed March 14, 2016.
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