There are many gender prediction tests available. Some can be described as old wives tales or tests which are based on no scientific evidence whatsoever. These tests might include what are known as Drano tests or the Chinese Calendar to predict the sex of the unborn child – these tests can be done just for fun and curiosity but it would be highly inadvisable to take the results of these tests seriously and make decisions based on these.
Other more reliable tests such as DNA gender prediction tests with urine are available. Let us in fact talk about the gender prediction tests that are worth doing, that are reliable and most importantly, that have been scientifically validated.
Ultrasounds are undoubtedly one way of determining the sex of the unborn child. The FDA and most practitioners do not recommend using ultrasounds as a means of determining the sex of the unborn child. Of course, ultrasounds are important routine screenings tests for pregnant women, so nothing wrong with asking the OBGYN to tell you the sex of the child once you are having yourself screened – normally somewhere between 16th-20th week of pregnancy. Typically the prenatal test is done to find any fetal anomalies and indicate whether the child might have autoimmune conditions like Down’s syndrome. Ultrasounds before 18 weeks of pregnancy might not be accurate baby gender tests as the sexual organs between a male and female fetus might be indistinguishable.
By far if you wish to know the sex of your child go for a test that is a DNA test- no other gender test can be as accurate and reliable as a gender test especially in the earlier stages of pregnancy.
Fetal DNA is found in the mother’s blood. The quantity is somewhere between 3-13% if the sample is taken around the 7- 9th week of pregnancy. The amount of fetal DNA will develop as pregnancy progresses and as the fetus develops. Even in the very early stages of pregnancy, there are still very small quantities of fetal DNA but these quantities are too small for a baby gender test to be carried out with success.
The fetal DNA found in the maternal blood is just fragments- there is no intact baby DNA. The blood eventually goes to the kidneys and these fragments will get flushed out when the mother urinates. The choice for the baby sex test is thus either of the following:
A baby gender prediction test with a small sample of maternal blood. A baby gender prediction test with a small sample of maternal urine (such as the KnowtheGender test). Normally for the blood test all that is required is a few drops of blood which can be taken using a lancet with which to prick your own finger. The urine test, on the other hand, requires providing a urine DNA sample for analysis. For both types of tests, the company normally provides a kit with all the necessary to collect the sample. The issue with these tests is that they are extremely sensitive to male DNA- in fact, no man is to come into contact with the sample and moreover, it is also recommended that for the gender test with urine the mother refrains from any sexual contact with a male for around 72 hours.
As we mentioned, fetal DNA fragments are found in the maternal blood and urine. Scientists use a technique known as polymerase chain reaction (PCR) to isolate the fetal DNA in the urine or blood. What they look for is the presence of the Y chromosome which will confirm the pregnant mother is expecting a baby boy. If there is no Y chromosome detected, then the baby will be a girl.
This also shows why baby sex tests are so sensitive to male DNA- if for example, a female has had sexual contact with a male and then shortly after provides a urine sample for the gender test, that the urine sample provided might have traces of the urine of the man with which there has been sexual contact. Scientists will in this case confirm the presence of the Y chromosome- but not belonging to the unborn baby.
A Baby gender prediction test based on DNA testing is a highly accurate means of determining the sex of the unborn child, far earlier than an ultrasound.