Advances in reproductive medicine have created new ways to investigate certain genetic and chromosomal conditions during IVF treatment. One option is preimplantation genetic testing (PGT), which may be considered when a couple has a known inherited condition, a relevant chromosomal concern, or another specific clinical indication.
For people searching for Genetic Screening of Embryos in Lucknow, it is important to understand what these tests can identify, who may benefit from them, and what their limitations are.
Dr. Richa Singh, associated with Urvara Fertility Centre in Lucknow, lists genetic screening of embryos among the clinic's fertility services. Patients considering this approach should discuss their medical history, family history, and treatment goals with a qualified fertility specialist and, when appropriate, a genetic counsellor.
What Is Genetic Screening of Embryos?
Preimplantation genetic testing involves examining genetic material from cells associated with an embryo created through IVF. Depending on the test, the aim may be to investigate a specific inherited genetic condition, a structural chromosomal rearrangement, or chromosome number.
The testing process generally requires IVF because embryos must first be created in a laboratory. When appropriate, a small sample of cells is collected from the embryo by a trained embryology team and sent for genetic analysis.
The result can help inform embryo selection, but it does not provide a complete assessment of every possible genetic condition or future health outcome.
Patients should understand that genetic testing does not guarantee implantation, pregnancy, or the birth of a healthy baby.
Types of Preimplantation Genetic Testing
PGT-M: Testing for specific inherited conditions
PGT-M is used when a family has a known genetic condition caused by a specific gene variant. Examples may include certain inherited blood disorders or other single-gene diseases.
The suitability of testing depends on the condition, the genetic findings in the family, and whether a reliable testing strategy can be developed.
Genetic counselling is important because the result may influence embryo selection and reproductive decisions.
PGT-SR: Testing for structural chromosomal rearrangements
Some people carry chromosomal rearrangements that may increase the risk of embryos having an unbalanced chromosome arrangement. PGT-SR may be considered in selected cases after a relevant chromosomal finding.
A specialist should explain the possible benefits, limitations, and alternatives, including the option of conception without embryo testing where appropriate.
PGT-A: Testing chromosome number
PGT-A assesses chromosome number in sampled embryo cells. It may identify embryos with an abnormal number of chromosomes in the sample.
Its value depends on the individual circumstances, and it is not routinely beneficial for every IVF patient. Testing can produce results that require careful interpretation, including findings associated with mosaicism or inconclusive results.
A specialist should explain what the result means and whether it is likely to change the treatment plan.
Who May Consider Genetic Screening of Embryos?
PGT may be considered for couples with a known inherited genetic condition, certain parental chromosomal rearrangements, or another specific indication identified during clinical assessment.
A personal or family history of a genetic condition may prompt genetic counselling and additional investigations. However, family history alone does not automatically mean that embryo testing is necessary.
The decision should consider the medical indication, expected benefits, limitations, costs, alternatives, and the couple's preferences.
Patients should avoid selecting PGT solely because it is advertised as an advanced treatment. Additional testing should have a clear clinical purpose.
How Does the Genetic Testing Process Work?
Step 1: Consultation and genetic assessment
The fertility specialist reviews the couple's medical and family histories. Previous genetic reports may be useful. Genetic counselling can help clarify which tests, if any, are appropriate.
Step 2: IVF treatment
If PGT is selected, IVF is performed to create embryos in the laboratory.
Step 3: Embryo development
Embryos are monitored as they develop. The embryology team determines whether an embryo has reached a stage suitable for biopsy under the laboratory's protocol.
Step 4: Embryo biopsy
A trained embryologist collects a small number of cells for analysis. The process must be performed carefully because embryos are delicate biological structures.
Step 5: Genetic analysis
The sample is analysed using a method appropriate to the specific genetic question. The time needed for results depends on the test and laboratory arrangements.
Step 6: Review of results
The fertility specialist and, where appropriate, a genetic counsellor explain the findings, their limitations, and the available options.
Step 7: Embryo transfer planning
If a suitable embryo is available and transfer is clinically appropriate, the team discusses the next steps. Genetic testing does not guarantee that an embryo will implant or develop into a healthy pregnancy.
Benefits and Limitations of Genetic Screening
When appropriately indicated, PGT can provide useful information about specific genetic or chromosomal questions. For some couples, it may help reduce the chance of passing on a known inherited condition or inform decisions about embryo transfer.
However, testing has limitations. A biopsy samples only a small number of cells, and those cells may not perfectly represent every cell in the embryo. Some results can be inconclusive, and not all genetic or developmental conditions can be identified.
Testing may also add costs and can affect the timing of treatment. Depending on the result, a couple may have fewer embryos considered suitable for transfer or may need to discuss further options.
In some circumstances, prenatal screening or diagnostic testing may still be recommended during pregnancy, even after PGT. Patients should ask their clinician which follow-up tests are appropriate.
Choosing a Centre for Genetic Screening of Embryos in Lucknow
Patients researching Genetic Screening of Embryos in Lucknow should ask about the clinical indication for testing, the laboratory performing the analysis, the type of PGT offered, expected turnaround time, and how results are interpreted.
Ask whether genetic counselling is available and whether the total cost includes embryo biopsy, genetic analysis, embryo freezing, and subsequent transfer.
Dr. Richa Singh's clinic website lists genetic screening of embryos among its fertility services. Prospective patients can contact the centre to confirm the available testing options and whether they are suitable for their particular circumstances.
Conclusion
Genetic screening of embryos can be useful in selected IVF cases, but it is not a requirement for every couple. The most appropriate approach depends on the specific genetic question, the couple's medical history, and the limitations of the available testing.
People seeking Genetic Screening of Embryos in Lucknow should choose a provider that explains the evidence, alternatives, costs, and possible outcomes clearly. A consultation with a fertility specialist and, when appropriate, a genetic counsellor can support informed decision-making.
Frequently Asked Questions
1. What is genetic screening of embryos?
It is testing performed on cells sampled from embryos created through IVF to investigate certain genetic or chromosomal characteristics.
2. Is PGT required for every IVF cycle?
No. PGT is considered for specific clinical indications and is not necessary for every IVF patient.
3. What is the difference between PGT-M and PGT-A?
PGT-M tests for a specific inherited genetic condition, while PGT-A assesses chromosome number. PGT-SR addresses selected structural chromosomal rearrangements.
4. Can PGT guarantee a healthy baby?
No. Testing has limitations and cannot identify every possible health condition or guarantee implantation, pregnancy, or live birth.
5. Is embryo biopsy safe?
Embryo biopsy is performed by trained professionals using laboratory procedures, but it is not entirely risk-free. Patients should ask about the procedure and the laboratory's protocols.
6. Who should consider PGT-M?
It may be appropriate when a couple has a known genetic condition that can be tested using an established method. Genetic counselling helps determine suitability.
7. Does PGT-A improve IVF success for everyone?
No. Its usefulness varies by patient group, and routine testing is not beneficial for every IVF patient.
8. Can genetic testing produce an unclear result?
Yes. Some results can be inconclusive or require additional interpretation. The clinic should explain what these findings mean.
9. Is prenatal testing still relevant after PGT?
It may be. A pregnancy care provider can explain appropriate prenatal screening and diagnostic options.
10. How can I ask about PGT in Lucknow?
Visit https://www.drrichasinghivf.in/ or call +91 80904 81533 to enquire about genetic screening services and consultation arrangements.