Do You Need Genetic Testing in IVF? When PGT-A or PGT-M Is Worth Discussing
Key Takeaways
- PGT-A looks for chromosome number changes, while PGT-M checks for a known inherited single-gene condition.
- Genetic testing in IVF may be more useful in certain situations, such as recurrent pregnancy loss, advanced maternal age, or a known family mutation.
- These tests can support embryo selection, but they do not guarantee a pregnancy or a healthy baby.
- Genetic counseling is an important step before deciding on PGT-A or PGT-M.
- Not every IVF cycle needs genetic testing; the best plan depends on personal medical history and goals.
Medically reviewed by the Acıbadem clinical team — June 13, 2026
Genetic testing during IVF can help some patients better understand embryo genetics before transfer, but it is not necessary for everyone. The decision between PGT-A, PGT-M, or no testing depends on age, fertility history, family background, and the reason IVF is being used.
Overview
When people begin IVF, one of the first questions they often face is whether embryos should also be tested genetically. The answer is not a simple yes or no. Genetic testing in IVF can provide useful information in some situations, but for many patients it is an optional step rather than a routine requirement.
The two tests discussed most often are PGT-A and PGT-M. PGT-A evaluates whether an embryo has the expected number of chromosomes, while PGT-M is used when a known inherited genetic condition runs in a family. A fertility specialist usually reviews the couple’s history, prior pregnancy outcomes, and any known genetic findings before recommending whether testing is worth discussing.
For international patients, this decision is often part of a broader IVF plan that must fit travel timing, lab coordination, and follow-up care back home. A clear explanation of what each test can and cannot do helps families make choices that feel informed rather than rushed.
Symptoms
Genetic testing itself does not cause symptoms, because it is performed on cells taken from an embryo during the IVF process. The question is usually not about symptoms in the body, but about signs in a person’s fertility history that may make testing more relevant.
These signs can include repeated implantation failure, several miscarriages, a history of a child or relative with a known inherited condition, or age-related concerns about embryo chromosome changes. In other cases, there may be no obvious warning signs at all, and the decision comes down to preference after counseling.
It is helpful to think of genetic testing as a decision tool rather than a test that responds to pain or illness. A person may feel completely well and still benefit from discussing PGT if family history or previous IVF results suggest it could add useful information.
Causes & Risk Factors
There are a few common reasons fertility specialists bring up genetic testing during IVF. One is advanced maternal age, because the likelihood of embryos with chromosome abnormalities tends to increase as egg age increases. Another is recurrent pregnancy loss, where chromosome issues in embryos may be one possible contributing factor.
PGT-M becomes relevant when a couple is known to carry, or may carry, a mutation linked to a specific inherited disease. This may include conditions passed in an autosomal dominant, autosomal recessive, or X-linked pattern. In these cases, IVF with PGT-M can help identify embryos that are not affected by the family’s specific genetic change.
Factors that may lead to a conversation about testing include:
- Repeated miscarriage or loss after IVF
- Advanced maternal age
- A known inherited condition in either partner or the family
- Previous child affected by a genetic disorder
- Multiple failed embryo transfers
It is equally important to know that these are discussion points, not automatic indications. Some patients with one or more of these factors still choose not to test, while others decide that the additional information is worth it.
Diagnosis
Before IVF genetic testing is considered, the clinic usually begins with a detailed history and baseline fertility workup. That may include blood tests, ultrasound, semen analysis, and sometimes a review of prior pregnancy tissue or previous genetic reports. If a hereditary condition is suspected, genetic counseling is often recommended before moving forward.
PGT is not a blood test performed on the patient. It is a laboratory process that uses a few cells from a developing embryo, usually at the blastocyst stage after fertilization in the IVF lab. The embryo is then frozen while the cells are analyzed, and transfer is planned later if the result supports it.
Because this is a laboratory decision built on medical context, the “diagnosis” is really a planning conversation. The specialist helps determine whether the goal is to look for chromosome balance with PGT-A, to search for a specific inherited mutation with PGT-M, or to proceed without testing.
Treatment Options
Genetic testing is not a treatment on its own, but it can shape how IVF treatment is carried out. With PGT-A, the aim is to identify embryos with the expected number of chromosomes before transfer. This may help reduce the chance of transferring an embryo that is unlikely to implant or that may lead to miscarriage due to chromosome imbalance.
PGT-M is more targeted. It is designed for families with a known gene change, and the lab creates a custom test for that specific mutation. This can be especially helpful when parents want to lower the chance of passing on a clearly defined inherited condition.
In practice, the IVF cycle may involve:
- Egg retrieval and fertilization
- Embryo growth in the laboratory
- Biopsy of a few cells from selected embryos
- Genetic analysis of the biopsied cells
- Freezing embryos while results are reviewed
- Planning Frozen Embryo Transfer vs. Fresh Transfer: When Each One Makes More Sense" class="ahp-ilk">embryo transfer based on the findings
Patients should also understand the limits. PGT-A and PGT-M do not guarantee pregnancy, and they do not replace prenatal care. Even after testing, doctors may still recommend standard pregnancy screening and confirmation tests.
Prevention & Self-care
There is no way to prevent every chromosome change or inherited condition, but there are practical ways to prepare for the IVF decision. The most useful step is usually genetic counseling, especially when there is a family history of a condition, prior miscarriages, or uncertainty about whether a mutation could be involved.
Self-care during this process often means slowing the decision down enough to understand the tradeoffs. Some patients value more information before transfer, while others prefer to avoid extra testing if it may not change the plan in a meaningful way. Both perspectives are reasonable.
Helpful steps include:
- Bringing prior test results and family history to the consultation
- Asking whether PGT-A, PGT-M, or neither fits the situation best
- Clarifying how testing may affect the number of embryos available for transfer
- Discussing timing if treatment is being coordinated from another country
- Planning emotional support during the waiting period for results
For patients traveling internationally, it is also wise to ask how results will be shared, whether embryo freezing is required, and what follow-up care will look like once they return home. A good plan is one that is medically sound and logistically realistic.
When to See a Doctor
A fertility specialist or reproductive endocrinologist should be consulted before starting IVF if there is any question about whether genetic testing could be helpful. This is particularly important when there has been a miscarriage history, repeated IVF failure, or a known inherited condition in the family. A qualified clinician can explain whether testing is likely to add clarity or simply add complexity.
Patients should also seek medical advice if they have already had one or more transfers without success and want to understand whether embryo genetics may be part of the picture. In some cases, the next step is not more testing, but a broader review of embryo quality, uterine factors, sperm factors, and overall treatment strategy.
For those considering care abroad, it can be reassuring to choose a center that offers coordinated fertility, genetics, and counseling support in one pathway. Acibadem Health Point’s multidisciplinary specialists and JCI-accredited hospitals diagnose and treat this condition for international patients, helping them navigate IVF decisions with clear communication and structured follow-up.
Frequently Asked Questions
Q: What is the difference between PGT-A and PGT-M?
A: PGT-A checks whether an embryo has the usual number of chromosomes, while PGT-M looks for a specific inherited mutation already known in a family. They answer different questions and are used for different clinical reasons. A doctor can help determine which, if either, fits the case.
Q: Does genetic testing make IVF more successful?
A: It can help in some situations by identifying embryos that are more likely to be suitable for transfer, but it does not guarantee pregnancy. Its benefit depends on the patient’s age, embryo numbers, and medical history. For some people, IVF without genetic testing is still the right choice.
Q: Is PGT-M only for people with a serious disease in the family?
A: It is usually considered when a known inherited condition could be passed on, even if symptoms in the family vary in severity. A genetic counselor can explain how inheritance works and whether the family’s condition is appropriate for PGT-M. The exact recommendation depends on the mutation and the family history.
Q: Can PGT-A detect all genetic problems?
A: No. PGT-A is designed to assess chromosome number, not every genetic disorder. It may miss some problems and it does not replace prenatal screening or diagnostic testing during pregnancy.
Q: Will all embryos need to be biopsied?
A: Usually only embryos that have developed to the stage where biopsy is technically appropriate are considered. The fertility team decides which embryos are suitable based on development and lab conditions. The goal is to protect embryo viability while gathering useful information.
Q: Should international patients arrange genetic counseling before traveling for IVF?
A: Yes, if possible. Pre-travel counseling can save time, reduce surprises, and help the clinic coordinate testing, freezing, and transfer planning. It also gives patients a clearer understanding of what happens if results are inconclusive or if no suitable embryos are found.
References
- American Society for Reproductive Medicine
- European Society of Human Reproduction and Embryology
- Centers for Disease Control and Prevention
- National Society of Genetic Counselors
- World Health Organization
This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.
