2023-11-29 23:26:00
If you are pregnant, you will typically be offered prenatal screening tests to detect spina bifida and other congenital defects. Although it is true that the analyzes are not perfect. But what are the different types of exams that exist? We tell you.
Blood test for spina bifida
Spina bifida can be detected with blood tests from the mother, although the diagnosis is usually made with ultrasound. The main tests carried out are:
Maternal serum alpha-fetoprotein test (MSAFP): A sample of blood is taken from the mother and tested for alpha-fetoprotein (AFP), which is produced by the baby.
Test to confirm high alpha-fetoprotein levels: Variations in AFP levels can be caused by some factors such as miscalculation in fetal age or multiple babies.
Other blood tests: the test can also be performed on maternal serum, through two or three other blood tests.
Ultrasound
Although the blood tests are fine, the fetal ultrasound It is the most accurate method to diagnose spina bifida in a baby before delivery. Ultrasound can be performed during the first trimester (11 to 14 weeks) and the second trimester (18 to 22 weeks). In the second trimester is when it can be diagnosed with greater precision. It can be said, therefore, that it is a crucial test to identify and rule out congenital anomalies such as spina bifida.
Amniocentesis for the diagnosis of spina bifida in the fetus
If the ultrasound confirms the diagnosis of spina bififi, the doctor may order a amniocentesis. This is a procedure in which the doctor uses a needle to remove a sample of fluid from the amniotic sac surrounding the baby. Although it is true that you should know that it is a test with a slight risk of pregnancy loss.
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