Pre-Pregnancy Sex Determination Methods: Comparing Scientific and Non-Scientific Approaches

psychologically prepared and can take advantage of the most reliable and cost-effective methods. But what actually works from the enormous number of natural, at-home, and lab-tested techniques available?

There are three types of pre-pregnancy gender selection techniques:

• High-precision scientific techniques such as IVF + PGD/PGT (99% accuracy), and IUI + MicroSort sperm sorting (80-90% accuracy).
• Semi-scientific methods with little research include the Shettles method (timing intercourse based on X and Y sperm characteristics, 60-70% accuracy) and boy/girl diets (55-60% accuracy).
• Non-scientific and traditional methods: i.e. Chinese calendar, certain sexual positions, folk beliefs with no scientific basis, pure chance.

In the remaining part of this article, we discuss and compare all these methods in terms of mechanism of action, real accuracy based on credible studies, costs, side effects, and conditions needed. This will help you select the best and most suitable option depending on your budget, medical condition and expectations. For specialized consultation and choosing a reliable method in the most reputable fertility centers, you can contact the Raadina Health Medical Tourism Company.

Is Fetal Gender Selection Before Pregnancy Possible?

Yes. In recent years, medical science has seen tremendous developments in the area of infertility treatment and fetal sex selection. It is possible to select the sex of a fetus before conception using sophisticated assisted reproductive technologies with an accuracy of over 99%.

The gender of the fetus is already determined at the very moment of conception, and it is impossible to determine or change it at this moment. But if fertilization takes place in a laboratory, the embryo can be genetically screened and the sex chosen.

Scientific Methods for Fetal Gender Selection Before Pregnancy

Today, there are several ways to determine the sex of the fetus before pregnancy. Each method has its own cost and, of course, its own success rate.

IVF-Based Fetal Gender Selection

In this method the eggs are taken from the mother and the sperm is taken from the father’s semen, and fertilization is done in a laboratory. Embryos produced in this way are screened and an embryo of the desired sex is implanted in the mother's uterus to establish a pregnancy. This method successfully determines gender up to 98% of the time.

Read more: How to Determine the Gender of the Fetus with IVF?

IUI and Sex Selection for the Fetus

The focus of IUI is the male’s sperm. A man's sperm has two kinds of chromosomes, Y (male baby) and X (female baby). In IUI they try to select the sperm based on their form and how fast they swim.

This method separates sperm with the desired chromosome and then injects them directly into the mother’s womb. So, in IUI, fertilization occurs inside the woman’s body. This method is much cheaper than IVF but has only about a 60% to 70% success rate.

Zahra, a 28-year-old mother of a two-month-old boy, chose the IUI method to determine the gender of her baby. Due to financial constraints, Zahra and her husband could not afford the IVF method. So they chose the IUI method to select a female gender. When she was three months pregnant, an ultrasound revealed that the fetus was male. This is an example of how uncertain sex selection can be with IUI.

Read more: Can IUI Really Let You Pick Your Baby’s Gender?

PGD (Preimplantation Genetic Diagnosis)

This is the most accurate way to determine the sex of the fetus, according to the reputable Harvard Health website (link at the end) and other sources. In this approach, IVF is first used to create embryos in the laboratory. Genetic tests are then carried out on the embryos being developed, so that the embryo of the desired sex can be chosen. Besides gender determination, this method also provides a comprehensive genetic disorder screening of the embryo so that the baby born is healthy and free of genetic problems.

Read more: PGD Gender Selection: Can you Choose Gender with PGD?

Intracytoplasmic sperm injection (ICSI)

ICSI is primarily used in men with severe infertility. If a man has a low sperm count, motility and quality, a sperm sample is taken and the single best sperm is directly injected into the woman’s egg for fertilization. The specialist can guess by the appearance and speed of the sperm whether it carries an X or Y chromosome and use it for the injection with this method. This method is not conclusive, like the IUI method, and only improves the chances of having a baby of the desired sex.

Scientific Comparison: Pre-Pregnancy Gender Selection Methods

What is the best way to choose the gender before pregnancy? To answer this question, you have to weigh several factors and choose the best option for your unique situation. For example, not everyone may have the money to afford IVF. So it's up to you. You can choose the best method using the comparison table below.

Which Method is Best for Definitive Gender Selection?

The most definitive method of gender selection in the world today is IVF, according to the latest studies by the American Society for Reproductive Medicine and other reputable sources. Using this method, the gender of the embryo is determined before pregnancy and transferred to the mother’s uterus. This method is also done with PGD, screening for all genetic diseases, giving you peace of mind on the gender as well as the health of the baby.

Traditional and Non-Scientific Ways of Choosing the Sex of a Child Before Conception

For centuries, several unscientific methods have been used to determine the sex of the fetus. It is good to remember that none of these methods is scientifically proven or guaranteed, and they only slightly increase the chances of conceiving a baby of the desired sex. Here is a list of some of the most famous of these methods:

The Shettles Method

One of the classic gender selection methods is the Shettles method, based on the timing of intercourse. Supporters of the approach argue that sperm with the X chromosome are slower, but have a longer lifespan. Sperm with Y chromosomes, on the other hand, are faster but have a shorter lifespan. Consequently, when coitus happens very near ovulation, the probability of conceiving a boy increases. Also, if the intercourse happens a few days before ovulation, the chances of conceiving a girl increase.

The Whelan Method®

The Whelan method also depends on timing intercourse. The Whelan method posits that biochemical changes in a woman's body throughout her menstrual cycle—not just at the time of ovulation—can influence the fetus's gender.

The Whelan method simply states that the biological environment of the woman’s body affects the survival of X or Y sperm. The method suggests that if intercourse occurs two or three days before ovulation, there is a greater chance of conceiving a girl, but if it occurs closer to the time of ovulation, the chance of having a boy is higher.

The Babydust Method

This non-medical method is based on a combination of factors: diet, timing of intercourse, and changes in the internal environment of the woman. For instance, this technique is based on the idea that altering the woman's body pH (acidity or alkalinity of the vaginal environment) affects the survival of X and Y sperm.

It is also said that if a couple has sex a few days before ovulation and then abstains from sex around the time of ovulation, the chances of conceiving a girl are higher. This method, like other non-medical methods, is not backed by scientific evidence and has been disproven by reputable scientific sources like Harvard Medical School.

Read more: Which Is the Best Method for Gender Selection?

Fetal Sex Determination by Ultrasound

Ultrasound detection of fetal gender has been available for decades. In this technique, from the 14th week of pregnancy, the fetus inside the womb of the mother can be visualized through ultrasound and the gender can be diagnosed. Note that ultrasound does not affect gender selection and only reveals the gender of the fetus once pregnancy has taken place.

Free Consultation to Choose the Most Accurate Gender Selection Method

Perhaps the various gender selection methods and the comparison between them have confused you a little. In this situation, only a specialized consultation can show you the right path. In Iran, Raadina Health Tourism Institute is one of the most famous centers where you can get free expert consultation. Specialist doctors will study your medical file, your particular circumstances will be considered and you will be advised on the best gender selection method.

Raadina will be with you at every step; from creating your medical file, booking your doctor and lab appointments, choosing the treatment center, and right until the end of your pregnancy to make sure everything happens the best possible way without stress or anxiety.

Conclusion

Methods of fetal sex selection include several medical and nonmedical approaches. The non-medical methods have no scientific bases and no guarantees. Among the various medical methods, such as IVF and IUI, IVF has a success rate of more than 98%. You can also undergo IVF combined with PGD. In this process, the embryo is also tested for genetic health, so couples can be completely sure of the full health of their newborn, in addition to choosing the gender.

Get a free consultation, precise treatment planning, dedicated support, and a personalized medical travel roadmap for gender selection in Iran. Contact the experts at Raadina medical tourism company today.

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Frequently Asked Questions

Can you choose the sex of a baby before you conceive?

Yes. Today, there are sophisticated medical procedures, such as IVF and PGD, to allow couples to choose the sex of their child before conception.

What is the most effective gender selection technique?

Today, IVF with PGD is the most accurate and has a success rate of over 99%.

Who is allowed to have gender selection pre-pregnancy?

In many countries, this procedure is only carried out in certain medical circumstances. But the rules in Iran are flexible and almost all couples can benefit from these services.

Is gender selection before pregnancy safe medically?

Invasive laboratory techniques may carry some small risks such as ovarian hyperstimulation, but if you are treated at a safe and reputable center these techniques are generally very safe.

Is sex selection before conception legal?

The laws differ from country to country. Some countries have banned it completely, while others allow it only in certain medical situations. The treatment is completely legal in Iran.

Health of the fetus and pre-pregnancy gender selection

Pre-pregnancy gender selection does not adversely affect the health of the fetus if you select a reputable center with experienced and specialized doctors.

Is it better to pick the gender before pregnancy or after pregnancy?

The sex of the fetus is determined at the moment of conception and cannot be changed afterwards. If you want to know for sure whether you are going to have a boy or a girl, you have to do it before you get pregnant. You can only find out what the gender is after pregnancy.

Does the age of the mother or father influence gender selection success?

The age of the parents does not impact the success of the gender selection technique itself. But the quality of the eggs and sperm does change with the age of the mother and father, which affects the overall odds of getting pregnant.

Is there a possibility of error in scientific methods?

There is a margin of error in every medical procedure. However, in the PGD method combined with IVF, the chance of error is exceptionally low—less than one percent.