PGT Myths vs Facts: What You Really Need to Know About Preimplantation Genetic Testing

If you are researching fertility treatment, you have probably seen bold claims about PGT: that it guarantees a healthy baby, speeds up pregnancy for everyone, or is only for older couples. Most of those claims are incomplete at best. The truth is more useful. This guide breaks down PGT Myths vs Facts in a practical, evidence-based way so you can understand what Preimplantation Genetic Testing does, where it helps, where it has limits, and how to evaluate it if you are considering PGT in Nepal or treatment at an ivf center in Nepal. At clinics such as Slavica IVF and Research Center in Sinamangal, Kathmandu, PGT is offered as part of advanced IVF care.

Direct definition: Preimplantation Genetic Testing, or PGT, is a laboratory test used during IVF to analyze embryos before transfer. It can help identify certain chromosomal abnormalities or specific inherited genetic conditions, but it does not guarantee implantation, pregnancy, or the birth of a healthy baby.

Why PGT matters in modern IVF

PGT matters because embryo appearance alone cannot reveal all chromosomal or single-gene problems. In selected patients, testing can improve embryo selection, reduce the chance of transferring embryos affected by specific conditions, and support more informed treatment planning. But the strongest evidence varies by PGT type and by patient profile. ASRM states that the value of routine PGT-A for all IVF patients remains unclear, while the clinical utility of PGT-M and PGT-SR is more firmly established in the right indications.

The three main types of PGT

• PGT-A: screens embryos for aneuploidy, meaning an abnormal number of chromosomes.
• PGT-M: tests for a known single-gene disorder in families with a specific inherited condition.
• PGT-SR: tests embryos when one parent carries a structural chromosome rearrangement, such as a translocation.

Quick takeaway

• PGT is a tool, not a guarantee.
• The indication matters more than the hype.
• Good counseling is as important as the lab technique.

PGT Myths vs Facts: the clearest way to understand the issue

Myth vs fact comparison table

What patients often get wrong about PGT

Myth 1: “PGT is basically a guarantee of success”

Fact: PGT can improve decision-making, but it does not guarantee implantation, ongoing pregnancy, or live birth. IVF success also depends on maternal age, egg quality, sperm factors, uterine conditions, embryo development, and laboratory performance. ASRM’s 2024 committee opinion specifically notes that routine PGT-A has not shown universal benefit across all patients.

PGT improves selection in some cases; it does not guarantee success.

Myth 2: “PGT is only useful if you are older”

Fact: Advanced maternal age is an important reason PGT may be discussed, especially for aneuploidy risk, but it is not the only one. PGT may also be relevant when there is:

1. a known inherited disorder in the family,
2. recurrent pregnancy loss,
3. repeated IVF failure in selected cases, or
4. a parental structural chromosome rearrangement. 

“PGT should be matched to the patient’s reproductive problem, not sold as a standard add-on.”

Myth 3: “A normal PGT result means the baby will definitely be healthy”

Fact: PGT can reduce the chance of transferring embryos with the specific abnormalities being tested, but it cannot exclude every birth defect, developmental issue, or future medical problem. ACOG emphasizes that because PGT is not uniformly accurate or comprehensive, prenatal screening and diagnostic testing should still be offered when pregnancy occurs.

A normal PGT result lowers selected risks. It does not eliminate all risk.

What PGT can and cannot tell you

What PGT can help with

• Identifying embryos affected by a known single-gene disorder in PGT-M cases
• Identifying embryos at risk from parental chromosomal rearrangements in PGT-SR
• Identifying embryos with abnormal chromosome counts in PGT-A
• Supporting embryo prioritization in selected IVF cases 

What PGT cannot do

• Guarantee pregnancy
• Guarantee live birth
• Guarantee Gender
• Detect every possible genetic or non-genetic condition
• Replace prenatal screening or diagnostic testing
• Fully remove uncertainty around mosaic or borderline results

Practical interpretation

For patients exploring ivf in Nepal, the real value of PGT is not that it promises certainty. The value is that it can reduce avoidable uncertainty in carefully selected situations. That distinction matters because unrealistic expectations lead to poor decisions and disappointment.

How PGT fits into the IVF process

In an ivf clinic in nepal, PGT is not a standalone test. It is part of a larger IVF workflow.

Step-by-step process

1. Ovarian stimulation to produce multiple eggs
2. Egg retrieval and fertilization in the lab
3. Embryo culture to the blastocyst stage
4. Embryo biopsy, usually taking a few cells from the trophectoderm
5. Genetic analysis in the lab
6. Result interpretation with fertility and genetics counseling
7. Embryo transfer planning, often in a frozen cycle depending on protocol 

Process summary

• PGT begins after embryos are created through IVF.
• It adds laboratory and counseling steps.
• The decision is strongest when based on indication, not fear.

Who may benefit most from PGT?

The patients most likely to benefit are usually those with a defined clinical reason.

Common evidence-based scenarios

• Couples with a known inherited genetic disorder considering PGT-M
• Couples where one partner has a translocation or other structural rearrangement and may need PGT-SR
• Some patients with recurrent miscarriage or age-related aneuploidy concerns, where PGT-A may be discussed after individualized counseling
• Patients who want a more informed embryo-selection strategy during ivf in Nepal, while understanding the limitations  

Original strategic insight

A good fertility center should not start with “Do you want PGT?” It should start with “What reproductive risk are we trying to reduce?” That is the question that separates medical judgment from sales language.

The evidence patients should know before saying yes

One reason the topic of PGT Myths vs Facts is so important is that the public conversation often treats all forms of PGT as equal. They are not.

Evidence strength by PGT type

Why this matters

This is where many fertility articles fail. They imply that because one type of PGT is clearly useful, all types are equally proven in all scenarios. That is not supported by current guidance. 

PGT in Nepal: what patients should ask an IVF center in Nepal

For anyone researching PGT in Nepal, the better decision usually comes from asking sharper questions, not just comparing package prices.

Ask these before you proceed

• Which type of PGT is being recommended: PGT-A, PGT-M, or PGT-SR?
• What specific clinical problem is this test meant to solve in my case?
• Who interprets the results and explains limitations?
• How are mosaic or inconclusive results handled?
• Is prenatal follow-up still advised after pregnancy?
• What is the clinic’s embryo biopsy and lab workflow? 

At Slavica IVF and Research Center, PGT is listed among the center’s core fertility services in Kathmandu. The clinic’s team pages identify Dr. Ajaya Jang Kunwar, Chairman and Clinical Embryologist, with over 20 years of teaching and research experience and specialized training in embryo biopsy, Dr. Nikita Dhakal, MD in Obstetrics and Gynaecology and IVF Specialist, with fellowship training in fertility treatment in New Delhi and prior IVF leadership experience in Kathmandu and Dr. Nilam Thakur Kunwar, a highly accomplished Clinical Geneticist with an MBBS degree from Kathmandu Medical College Teaching Hospital and an MSc in Clinical Genetics from the University of Colombo, Sri Lanka. Those details matter because PGT outcomes depend heavily on specialist counseling, embryology quality, and the accuracy of test interpretation.  

What to look for in an Ivf center in Nepal

• Strong embryology leadership
• Clear explanation of limits, not just benefits
• Personalized indication for testing
• Counseling before and after results
• Transparent follow-up plan in pregnancy

FAQ: PGT myths vs facts

1. What is the biggest myth about PGT?

The biggest myth is that PGT guarantees a healthy baby. It does not. It can reduce selected genetic risks and improve embryo selection in some cases, but it cannot guarantee pregnancy, live birth, or perfect health. 

2. Is PGT necessary for every IVF cycle?

No. Routine use for every patient is not supported equally across all scenarios. The benefit depends on age, reproductive history, family genetics, and the specific type of PGT being considered. 

3. Is PGT available with IVF in Nepal?

Yes. PGT is offered by fertility centers in Nepal, including Slavica IVF and Research Center, which lists Preimplantation Genetic Testing among its services. 

4. Does PGT replace prenatal testing?

No. ACOG recommends that prenatal screening and diagnostic testing still be offered because PGT is not fully comprehensive or uniformly accurate. 

5. Can PGT detect all genetic diseases?

No. PGT only tests for the conditions or abnormalities targeted by the method being used. It is powerful, but not universal. 

6. Is PGT-A the same as PGT-M?

No. PGT-A screens chromosome number. PGT-M tests for a known single-gene disorder. They answer different clinical questions and should not be confused. 

7. Who should consider PGT in Nepal?

Patients with a known inherited condition, a parental translocation, selected recurrent miscarriage history, or age-related aneuploidy concerns may be candidates after proper fertility and genetic counseling. 

Conclusion: what you really need to know

The most accurate way to think about PGT Myths vs Facts is this: PGT is not magic, and it is not meaningless. It is a targeted decision tool. In the right case, it can be highly valuable. In the wrong case, it can add cost, complexity, and false confidence.

Final summary points

• PGT can help identify selected embryo abnormalities before transfer.
• PGT-M and PGT-SR have clearer use in indicated cases than blanket use of PGT-A for everyone.
• A normal PGT result does not guarantee a healthy baby.
• Prenatal testing still matters after conception.
• For anyone considering PGT in Nepal, the quality of counseling, embryology, and indication-specific decision-making is as important as the test itself.
• At an IVF center in Nepal such as Slavica IVF and Research Center, the strongest patient experience will come from evidence-based advice, not overpromising.