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Desire is common to all parents. Modern medicine allows you to do this with a fairly high accuracy from 4-5 weeks, using the genetic material of the blood of a pregnant woman. This is a rather expensive technology that is not available to all expectant mothers and fathers.
Some enterprising manufacturers are playing on this by offering to make a baby gender test at home. It works in a similar way to a pregnancy test, i.e. uses a pregnant woman's urine to react with a chemical that changes color depending on the sex of the fetus.
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The sex of the unborn child can be found in two ways: and a laboratory blood test of a pregnant woman. In the first case, a visual diagnosis of the fetus is carried out using an ultrasound examination of the uterine cavity. The sexual characteristics of a person are well formed already at 24-25 weeks of pregnancy, which allows the doctor to see the presence of male or female genital organs. But ultrasound diagnostics does not guarantee 100% accuracy, because features of intrauterine development are such that the testicles of a boy can sometimes be confused with the labia of a girl and vice versa.
Determining the sex of the child by ultrasound
More accurate results are given by a DNA test to determine the sex of the child. For this, the venous blood of the mother is taken and examined in the laboratory for the presence of a male fetus in it. This test gives 95-98% accuracy at 4-5 weeks, and 99-100% after 7 weeks of gestation.
DNA blood test for the presence of a Y chromosome
An analysis of the genetic material of a pregnant woman is the most accurate test for determining the sex of a child. How does he work? Already from the first weeks of pregnancy, a small amount of fetal cells of the fetus is present in the mother's blood. They are the ones that are discovered and examined in the laboratory. If the test reveals the Y chromosome (the part of the genome responsible for the male sex), then we can say with 99% accuracy that a boy will be born. The absence of this chromosome in fetal DNA suggests that the sex of the child is female.
Previously, a laboratory test to determine the sex of an unborn child was done for medical reasons, if it was necessary to determine the likelihood of transmission of a hereditary disease to a male or female fetus. Today everyone can use a DNA test. The advantage of this method is high accuracy, the disadvantage is high cost and rather long test execution time - up to 5 days.
Important! It is possible to find out the sex of a child using fetal DNA analysis with an accuracy of 99% for only one fetus. With multiple pregnancies, the test results will no longer be accurate. it is impossible to determine the gender of another baby. When detecting the Y chromosome, there can be two options: either they are boys or twins (boy and girl).
Gender test
Parents' desire often becomes a lever for manipulation. For example, not so long ago, the so-called. gender test to determine the sex of the child, which supposedly allows you to determine the sex of the fetus at home. Like the pregnancy test, the baby's gender test uses the pregnant woman's urine. It interacts with the reagent and shows either pink (for a girl) or blue (for a boy).
The manufacturer explains this according to the same principle as a laboratory DNA test. Allegedly, the preparation contains highly sensitive indicators that accurately react to the fetal DNA in the mother's blood and determine the Y chromosome. But is it really so?
You cannot take a baby test to determine the sex of a child seriously. To determine fetal DNA, only the mother's blood is required, which contains fragments of this DNA. They can only be detected using high-precision medical equipment during a laboratory test.
You can find positive reviews about the test for determining the sex of the child from women whose result coincided with the gender of the baby born. But this is the operation of the theory of probability, i.e. accident. After all, only two options are possible: either a boy or a girl. The same is in the test - either pink or blue. By the way, the manufacturer points out in small print on the packaging with the test that there may be discrepancies, thereby disclaiming responsibility for erroneous results.
Soda test
Is another method that can be found in the vastness of women's forums devoted to pregnancy. It also requires the use of the mother's urine, which must react with baking soda and behave differently depending on the sex of the fetus.
They interpret this reaction in different ways: if it foams and hisses, then there will be a girl, if not, a boy, and vice versa.
But this test for determining the sex of the unborn baby has nothing to do with either science or common sense. Sex hormones, fetal DNA of the fetus or other substances in the urine of a pregnant woman cannot influence the nature of the reaction with sodium bicarbonate. A chemical reaction can be caused by the interaction of soda with salts in the urine (sulfates, phosphates, chlorides), but not by the presence of fetal DNA in it.
Can you tell by a pregnancy test?
The normal gender of the child also does not show. It identifies only by responding to the concentration of hCG (human chorionic hormone) in the urine. There are no other indicators that can respond to fetal cells in the mother's blood in a pregnancy test.
The accuracy of the home pregnancy test does not exceed 75%. its indicators are influenced by various factors: tumors, abortions, taking certain groups of drugs containing hCG, an irregular cycle, kidney disease and others.
Which method is the most accurate?
It is impossible to find out the sex of the child by the test of special tables, determining the phase of the moon, the position of the planets and constellations, etc.
If parents have a very strong desire to find out who will be born to them, it is better to take a gender test in a certified laboratory, paying money for an accurate result. This waste pays off, unlike home pseudo tests with unknown chemical composition.
Useful video
In 2007, American scientists developed a technique that allows you to determine the sex of a child using a DNA test. The technique is based on the fact that the mother's blood contains particles of the baby's DNA. How material is collected for research, and how the analysis itself proceeds, you can watch the video:
Many couples dream of a baby of a certain gender. Having learned about the imminent replenishment in the family, conversations immediately begin about who will be born. But only after the 15th week, it is possible to more or less accurately identify the sex of the fetus by ultrasound, and to get an accurate answer, you will have to wait until the 23rd week. But what if you want to know right away? It is believed that the sex of the baby can be calculated from the first days of pregnancy, as well as determine the sex of the unborn child by the blood of the parents at the planning stage.
Many people prefer not to know the gender of the baby until he is born.
Sex is formed from the moment of conception. Chromosomes are responsible for this process. Their "carriers" are the egg and sperm. Chromosomes contain information that determines the further "construction" of the organism. The egg cell carries only the X chromosome, the sperm - X or Y. They merge, defining the sex code of the future person. XY - boy's code, XX - girls.
In the sixth week after conception, the formation of the sex glands occurs. Hormones take part in their formation. When the glands are formed, the genitals appear. This occurs between the eighth and ninth weeks. The fetus, while in the womb, is exposed to androgens. They are responsible for the "secondary" - the sexual characteristics of the formation of the body according to the male / female type.
What does ultrasound show?
The most reliable way to determine the sex of a baby in utero is ultrasound. However, until the 15th week, it is impossible to distinguish sexual characteristics even with the help of ultrasound. Although the genitals begin to form from the sixth week, until the ninth they look the same - the genital tubercle. From the 15th week, you can see the sexual characteristics on the ultrasound more clearly, but the sex determination will be unreliable until the period exceeds 20 weeks. Why is early gender bias error prone? There are several reasons:
- The labia of girls before the 20th week are often swollen. They are mistaken for the boy's genitals.
- In the early stages, the umbilical cord loops are positioned in such a way that they can be mistaken for the penis.
- Can be confusing to place the fetal hand (covering the genitals).
- While the fetus is actively forming, its legs are compressed. It is difficult to see the genitals. Therefore, mistakes often occur with early sex determination: a boy is identified as a girl.
There is an opinion that it is already possible to see a boy on ultrasound from the 18th week, and the girl - only after the 20th. But still, the optimal time for going to a specialist to answer the question about the sex of the baby is 20 - 24 weeks. Sex differences during this period are clearly distinguished. The fetus moves a lot, so it is highly likely that during the procedure it will take a position where you can definitely see sexual characteristics. It is important to choose a qualified professional. There should be new equipment in the ultrasound room - then the ultrasound examination will give an accurate answer to the question that interests the parents.
We take a blood test - find out the gender
It is possible to accurately find out the sex of the crumbs not only with the help of ultrasound. There is another method of laboratory diagnostics - determination by the analysis of the mother's blood. For the analysis, the venous blood of a pregnant woman is informative. The advantages of the method include:
- The ability to early determine the gender of the fetus. Already in the sixth week, you can say for sure who the couple is waiting for. But it is better to wait for the 9th: then the results will be reliable.
- Security. Venous blood sampling does not threaten either the mother or the unborn baby.
- High accuracy. In most cases, the results of the analysis are confirmed by ultrasound, and there will be no surprises afterwards.
The essence of the method consists in examining the patient's blood for the presence of a Y chromosome. In the cells of the female body, in the normal state, there are chromosomes only with the "X" marker. The circulatory system of a pregnant woman is associated with the blood flow of the fetus. The placenta prevents them from mixing, however, a small amount of embryonic blood cells penetrates into the blood of the expectant mother. If the analysis shows the presence of only "female" chromosomes, then a girl will be born. When Y chromosomes are found in the blood of the expectant mother, there will be a son.
If the method of searching for fetal DNA in the mother's blood is reliable, safe and allows you to find out valuable information as early as possible, why do not all couples turn to it? Although the method has been introduced into diagnostic practice, not all laboratories carry out it: qualified specialists and laboratory equipment are needed.
Such analysis is not a cheap pleasure, so usually they turn to it not because of a whim to find out who will be, but out of necessity. For example, if genetic diseases are transmitted in the family through the male or female line and you need to find out as early as possible who the woman is carrying.
Blood renewal theory
Laboratory research can tell a lot
Couples who are in a hurry to find out who will be born often resort to alternative methods of calculating a boy / girl. These same methods are popular with couples who are planning a pregnancy and want a baby of a certain gender.
The most popular method is blood fluid calculations. There is a theory according to which a person's blood is regularly renewed. In men, this process occurs every four years, in the fairer sex, more often - every three. Based on this knowledge, the couple can find out who (boy or girl) is waiting for and even plan the "right" gender of the baby.
How it works? Everything is extremely simple. The gender of the child is determined by blood renewal as follows: which parent has a blood fluid "younger" at the time of conception - the same sex will be a crumb. That is, the blood of a future mother is "younger" - waiting for a girl, for a father - for a boy. Renewal theory can be used as a guide for planning. There are two approaches to counting:
- Updates are counted from birth.
- Updates for the stronger sex are counted from the age of sixteen, for girls - from fifteen.
How to calculate the floor using the first approach? Divide your age by three and your partner by four. By comparing the remains, one can understand whose blood is younger, and draw conclusions who will be born. The second approach is even simpler. It is easy to find an age table on the Internet at which blood renewals occur in both sexes. Partners only need to compare their age with the available data and understand who is younger by blood. Below is a table with the ages of women and men, which are updated.
| Women | Men |
|---|---|
| 15 | 16 |
| 18 | 20 |
| 21 | 24 |
| 24 | 28 |
| 27 | 32 |
| 30 | 36 |
| 33 | 40 |
| 36 | 44 |
| 39 | 48 |
There is a way to find out valuable information "without bothering". On specialized sites, you can find an online calculator that will help you make the right calculations. To use it, you need to know the exact dates of birth of the parents and the date of conception (completed or desired). The program will give the result in a second.
Nuances
When determining the sex of the unborn baby, according to the theory of blood fluid renewal, it is important to know the nuances. Calculations according to one of the schemes are carried out only if the partners did not have significant blood loss during their life. Blood loss is considered significant when:
- donation;
- transfusion of blood fluid;
- injuries;
- operations;
- miscarriages;
- abortion;
- childbirth.
If blood loss occurs, then the renewal process gets off the set schedule. Renewal occurs during the period of blood loss. We calculate from this moment, adding three and four years, respectively. For example, if a girl underwent surgery at 20, then the next update of her blood fluid will occur at 23, although according to the table this should have happened at 21.
When calculating, a situation can lead to a dead end when both parents have young blood at the time of conception. The adherents of the theory of renewal say that in this case, the likelihood of having twins is high.
We count by blood group
Not only one technique has been invented based on the characteristics of the parents' blood fluid. You can calculate the sex of the unborn child and the blood group of partners. This method impresses with its simplicity, therefore it is popular. You can count online. You only need to enter the blood group of a woman and a man in the appropriate lines - the result will immediately appear. There is a table that you can use to understand which envelope to buy at the hospital - pink or blue.
This method has many fans. However, one drawback is obvious. If you believe the table, then the couple will only be able to conceive same-sex children. How then to explain that some parents have a daughter, and then a son?
Rh factor calculation
A couple can also recognize the sex of their future baby by the Rh factor. The method is as simple as possible. You need to know the Rhesus of both parents. Then the data are compared.
- Rhesus coincide - there is a high probability of the birth of a girl.
- The indicators are different - there will be a boy.
Like the blood group method, this theory is flawed. Its credibility is easy to question. It also assumes the birth of one pair of exclusively same-sex babies. Adherents of blood-based calculation methods recommend combining them in order to get an accurate answer to the question of the sex of the fetus. When the answers are different, we tend to the one that appeared more times. For example, the theory of "young blood" and Rhesus indicate a son, the group - a daughter: the probability of the birth of an heir is higher.
Chinese and Japanese calculation tables
You can find out the gender of your baby using special tables - Chinese and Japanese. They are easy to find on the net: these techniques are very popular among expectant mothers. The Chinese and Japanese methods are not scientifically supported. They are based solely on the observations of the peoples of Asia. There is a legend that such tables were used even by emperors who dreamed of an heir.
To use the Chinese technique, you need to determine the month of conception (happened / expected), know the age of the expectant mother (at the time of conception). At the intersection of the columns corresponding to the information, the gender of the baby is indicated. Below is the table by which you need to count.
The Japanese calendar is similar to the Chinese calendar, but it is more difficult to figure it out. According to the Japanese method, it is also necessary to take into account the date of birth of the future dad. To make calculations in this way, it is better to use online programs: it is easy to get confused in the Japanese table. It is believed that the Chinese method is more reliable due to its flexibility.
The accuracy of Asian techniques is controversial, but many couples claim the results are valid. The main problem arises when determining the month of conception. Especially when the maturation of the egg occurs at the end of the month - fertilization could occur at the end of the month or at the beginning of the next. The probability is the same.
Focusing on ovulation
Conception occurs only on certain days of the cycle. The most favorable - two days before the release of the egg, day "X" itself and two after. If a couple is planning a pregnancy, then the woman is in practice familiar with the methods that allow to determine ovulation - the BT schedule, test strips, body signals (change in well-being, change in the nature and amount of discharge). Determining the maturation of the egg, at the same time, you can "program" a daughter or son.
The main thing is to believe that dreams come true.
Spermatozoa that carry "girlish" chromosomes are considered slow, but tenacious. They can "wait" for ovulation for up to four days. Sperm with the "Y" marker have the opposite "character": they are mobile, but die quickly. With this in mind, you can start "programming" the floor. To increase the chances of having a girl, you need to make love four to two days before ovulation. If intercourse occurs on the ovulatory day or the next day, the likelihood of conceiving a boy will increase. The complexity of the method lies in the ability to accurately determine the right time for conception. But after "practicing" a couple of cycles, women can easily recognize auspicious days.
If the pregnancy was planned, but the gender was not "ordered", you can use the same method to find out. This is possible if the BBT schedule, which determines ovulation, is preserved, and the couple remembers when intercourse occurred.
What the signs say
Since ancient times, women have wanted to know as early as possible who they are wearing under their hearts. They noticed how their appearance and preferences changed during pregnancy, looked closely at other women in position. This is how signs appeared that make it possible to understand who will appear in the family. The observations have been passed down for generations. Modern mothers often draw conclusions based on folk wisdom. Here are the most popular signs:
- Severe toxicosis - there will be a boy.
- Acute (protruding) form of the abdomen - a son will be born; round - daughter.
- The expectant mother is getting prettier - to wait for the heir; the appearance leaves much to be desired - the beauty was "taken away" by the baby under her heart.
- The boy "loves" meat, salty and sour food, the girl - sweet, starchy foods. It is necessary to note what kind of food pulls when carrying.
- The areola of the nipples darkened - a pink envelope needs to be prepared at the maternity hospital, lightened - a blue one.
- Often shivers - to wait for a girl, throws in a fever - a little boy.
- If the first movement was on the left side, the heiress will be born, on the right side - the heir.
In the old days, women loved to tell fortunes on the floor. The most common fortune telling is by the ring. You need to take the engagement ring, stretch a long thread through it and hang it over the left palm. The ring moves like a pendulum (forward / backward) - a hero will be born, a princess moves in a circle.
You should not completely trust the calculated methods for determining the sex of the future baby. The exact answer is given only by ultrasound. But even with an ultrasound examination, an error is not excluded. If it happened, do not be upset: the main thing is the health of the baby.
Many married couples are eager to know who will be born to them in the first weeks after conception. Nowadays, there are many ways to determine who will be born. For example, ultrasound or various invasive techniques (sex detection during amniocentesis). But it is worth noting that invasive techniques are dangerous to health and can cause the development of complications and sometimes even miscarriages. The most optimal and safest for health is the determination of the sex of the child by the mother's DNA. He is considered to be the most reliable one. Moreover, with the help of this analysis, you can check whether the child has congenital diseases and various development of chromosome abnormalities.
Thanks to modern medicine, it is now possible to find out the sex of the child by DNA from the mother's blood, reviews of such an analysis are extremely positive. It does not require a special referral, you only need to have the desire and money to do a DNA blood test to determine the sex of the child
And most accurately to find out about the genetic health of the unborn child and his gender.
Determining the sex of the child by blood (DNA)
DNA analysis consists of three steps:
- Take venous blood from the mother;
- Find fetal cells and do genetic analysis;
- The result is displayed.
The blood donation procedure itself does not stand out in any way from the rest: blood is donated in the morning in the laboratory. No preparation is needed for this. However, before donating blood, a woman is advised to refrain from any communication with individuals of the opposite sex. This is due to the fact that during any contact with a man, various chemical and biological processes begin in the female body, after which substances may appear in the blood, due to which the results of the analysis will be incorrect. For this reason, in many laboratories, the specialists who perform DNA analysis to determine the sex of the child are women and the blood collection is also carried out by female workers. No more than 20 ml of blood is taken from a pregnant woman, which is then divided into 2 identical tubes. But for the next stage, high-quality equipment is needed, which can not be found at all in every laboratory. To identify fetal cells from the blood, you need special equipment, and for genetic analysis, which is a variety of experiments and observations, you need professionalism and experience in this matter. The duration of this stage is 4-5 days. The essence of the study is based on the fact that a pregnant woman has partial fetal DNA in her blood. However, the very structure of DNA is different depending on gender. If girls' DNA contains XX chromosomes, then boys will have XY chromosomes. If, when examining the DNA molecule of the fetus, the Y chromosome is found from the mother's blood, this indicates that the child will be born male. If the Y chromosome is not found, it will be concluded that the fetus is female.
DNA analysis to determine the sex of the child: the reliability of the analysis
Scientists have proven that with an increase in the duration of pregnancy, the exact determination of the sex of the child by DNA blood also increases:
During the period:
- from 7 to 9 weeks, the test accuracy is 95%;
- From 9 to 11 weeks of pregnancy, the accuracy is 97%;
- From week 12 onwards, the reliability of the results is the highest - 99%.
As already mentioned, of all the methods aimed at identifying the sex of a child, the most reliable and safe for health is a DNA test to determine the sex of a child, reviews of which are only positive.
What can reduce the reliability of DNA from blood by the sex of a child?
Yes, the determination of the sex of the child by the mother's DNA is highly accurate, but there are various features that can easily affect the result, thereby underestimating the accuracy of this test. These features are:
- Early pregnancy, which will not produce the required amount of DNA molecules.
- Lack of knowledge of the exact duration of pregnancy.
- Development of multiple fetuses in the uterus.
If you are in doubt about the reliability of the result, it is recommended to take the test again after two weeks. This will usually give you 100% accurate results.
DNA research has many advantages, including:
- Convenience;
- security;
- the result comes pretty quickly;
- Accuracy.
In order to do a DNA test, you will need a rather large amount of money. In all laboratories for a DNA test to determine the sex of a child, the price is different. It depends on many factors, such as the qualifications of the specialists, equipment, reputation of the laboratory, etc. How to choose the right laboratory for the analysis so as not to doubt the accuracy of the result? Contact a laboratory in your city, or in the nearest major city. Consult with specialists from different laboratories to decide for yourself where you will feel more comfortable. Do not choose a laboratory where the cost of analysis is the lowest - it is better to choose something in between. In total, a DNA test can be done for 5-6 thousand Russian rubles.
Genetics and everything connected with it is our future. Keeping up with the times today, we can not only prove ourselves as educated people, but also keep our children healthy, and this is exactly the case. Even if the price of a DNA test for determining the sex of a child is not small, the reviews about it are only the best, since thanks to it you can be sure of the health of your unborn child.
Determining the sex of the child by the mother's blood (DNA) and not only
Also, a woman can count on a test to determine the sex of the child in the early stages of pregnancy. The essence of the home test is that a woman collects her morning urine in a special cup, where the test with special reagents is placed. The liquid will have to be stirred for several minutes, waiting for it to acquire a color characteristic of a particular result.
A DNA test to determine the sex of a child tells the truth almost always. Of course, it is possible to determine the gender in advance, but is it so important? The main thing is health. The main thing is that the child does not take on genetic diseases that are not necessary for him and develop.
Three easy steps to determine the sex of your baby in utero.
01
Make an appointment with us at the center or order a blood collection kit.
Call us by phone to clarify your pregnancy period and sign up for a blood donation by toll-free tel: 8-700-550-2413 in your city.
02
Material intake
To determine the sex of the child, the mother's usual venous blood is required. (for rent Not on an empty stomach) at any time.
03
Get the result in 2-4 days
Sign a contract. Make payment. Donate Blood. Analysis readiness 2-4 work. Days (from the moment the samples are received by the Laboratory)
GenderBaby Test is a non-invasive prenatal test for early sex determination of a baby using the mother's blood.
SEX DETERMINATION RESULTS
From the 8th obstetric week, the reliability of the analysis for determining the sex of the fetus is up to 98% for a girl and 99% for a boy.
The Final Report contains one of the following results that
- - "Y-chromosome marker has been identified - Estimated fetus sex MALE" The accuracy of the analysis reaches 99%, depending on the gestational age ..
- - "Y-chromosome marker NOT detected" - This means that:
1) gender of the child "FEMALE" up to 97%
2) either the amount of fetal DNA in the mother's blood is very low (below the detection limit using a DNA test).
Future parents have always been interested to know the gender of the unborn child. Most modern methods for determining the sex of a child allow you to get a relatively accurate result only in the late stages of pregnancy, that is, not earlier than the 21st week. "Center for Genetic Research" offers you a unique genetic analysis of DNA for Early Sex Determination.
We use advanced methods of sex determination already at the 6th week of pregnancy. This became possible in 2003, thanks to Canadian scientists who developed a method for the isolation of fetal DNA in the mother's blood in the Health Genetic Center laboratory.
This diagnostic method gives a reliable result from the 6th week with an accuracy of 95-97% when the Y chromosome is detected in the blood of a pregnant woman. If you want to get a more accurate answer, we recommend that you contact us after the 9th week of pregnancy, because every day the concentration of fetal DNA containing the Y-chromosome increases and the analysis gives a result whose accuracy reaches 99%.
Count from the first day of your last menstrual period for 8 weeks - this will be the obstetric period. Or 6 weeks from the day of conception. If this is not possible, go to an ultrasound scan, the gestational age for an ultrasound scan to determine the sex of the fetus should be at least 6 weeks.
What is the principle of fetal sex determination technology?
Highly sensitive technology for the detection of fetal DNA (FETAL DNA) in the mother's blood. The DNA test is based on the detection of a Y chromosome in the mother's blood cells, which begins to appear from the 5th week of pregnancy. The presence of the Y-chromosome indicates that the sex of the fetus is "Male". But, since the process of pregnancy development is individual for all women, the possibility of obtaining accurate information during this period is not always present.
What can affect the accuracy of the analysis?
Erroneous determination of the gestational age (in the early stages); the presence or absence of previous pregnancies; personal characteristics of the body of the expectant mother; fetal development rate; the presence of the possibility of multiple pregnancies, etc. In addition, in the case of a Y-chromosome marker (boy), the accuracy of the analysis is higher, because a negative result (girl) may show not the absence of a marker, but a reduced concentration of fetal DNA.
What information should be provided at the time of donating blood?
on a special form it will be necessary to indicate: full name, terms of pregnancy, age, information about previous pregnancies, contact email address. mail and phone number. If you have, take the last ultrasound with you
How soon will I receive a result for determining the sex of the child?
The results of the analysis can be provided after 1-3 days. If you have an email address A copy of the conclusion is sent to him by mail, and the original is issued personally or sent by mail.