What is the Most Accurate Test to Determine If a Pregnancy Is Male or Female?

Update Date: 2024-05-29 Source: Network

With the development of medical technology, there are many methods to diagnose the same disease, which can be confirmed through a variety of examination results and clinical symptoms. In medicine, many examinations are not allowed by national laws, but they have to be carried out to avoid some diseases. For example, if the incidence of some genetic diseases is higher in men than in women, it is necessary to test the gender of the fetus. What is the most accurate test for pregnancy with a boy or a girl?

1. What is the most accurate method to test the gender of a pregnant woman?

Generally speaking, around the 16th week of pregnancy, which is 4 months of pregnancy, a pregnant woman can detect the gender of the fetus through an ultrasound. Ultrasound is the simplest and most convenient method. At three months of pregnancy, the fetus has already developed well-developed external genital organs, so the gender of the fetus can generally be inferred by ultrasound at 4 months.

2. Methods for Testing the Gender of the Fetus

1. Amniocentesis

Amniocentesis is mainly used to diagnose whether the fetus has chromosomal or neural tube defects, usually performed during the 16th to 20th week of pregnancy. Since the chromosomes of the fetus can be known, the gender of the fetus can also be determined. The accuracy can reach 99%, but there is a 1% chance of miscarriage. Therefore, the medical community does not recommend amniocentesis or umbilical cord blood sampling solely for the purpose of determining the gender of the fetus.

2. Chorionic Villus Sampling (CVS)

Also known as "chorionic villus biopsy", it is usually performed during the 8th to 10th week of pregnancy. The main purpose of CVS is the same as amniocentesis, which is to diagnose whether the chromosomes of the fetus are normal, but some people also use it to diagnose the gender of the fetus. The accuracy rate can reach 98%. Although CVS can determine the gender of the fetus around the 10th week of pregnancy, it may cause miscarriage (3% to 5%) and may also harm the fetus, causing defects in its hands and feet. Therefore, it is best not to undergo this test solely for the purpose of determining the gender of the fetus.

3. Type B Ultrasound Diagnosis

Type B ultrasound diagnosis can not only detect the gender of the fetus, but also detect whether the fetus has craniocerebral dysplasia, meningocele, hydrocephalus, and other serious intellectual developmental disorders. At the same time, it can also detect whether it is a twin pregnancy, molar pregnancy, and ectopic pregnancy, etc. This is a highly accurate examination method that does not harm the fetus or the pregnant woman.