PGS and Array CGH Testing in Tbilisi, Georgia

When researching embryo testing for IVF, you may see the terms PGS, PGT and array CGH. They refer to related but different things. At Clinic Atlas in Tbilisi, we can discuss what a test may show, its limitations and which questions to ask about the laboratory method used in your care.

What Are PGS and PGT for Aneuploidy?

What Does PGS Mean Today?

PGS is an older term for testing embryos for chromosome number. The current term is PGT for aneuploidy. This test examines sampled embryo cells for missing or extra chromosomes.

What Can the Result Tell Me?

A test result describes the cells that were sampled. It does not assess every cell in the embryo or every genetic condition. Results may be unclear or mosaic, meaning the sample shows more than one chromosome pattern. Testing cannot guarantee implantation, pregnancy or birth.

What Is Array CGH?

How Does Array CGH Work?

Array comparative genomic hybridization, or array CGH, is a laboratory method that compares genetic material from a sample with a reference. It can be used to assess gains or losses in chromosome material. It is a testing method, not a treatment by itself.

How Does Array CGH Compare with Other Methods?

Laboratories may use different methods for PGT, including array CGH and next generation sequencing. These methods can differ in resolution, analysis, turnaround time and how they report mosaic results. One method should not be described as universally better for every patient or as guaranteeing better treatment outcomes.

Ask Which Method Is Used

The laboratory method depends on the test and laboratory involved. We encourage you to ask which method will be used for your case and what its limitations are.

How Is Embryo Testing Done?

IVF and Embryo Biopsy

PGT is performed as part of IVF. After eggs are fertilized and embryos develop, a small number of cells may be collected for testing, often at the blastocyst stage. The embryo may be frozen while results are prepared.

Understanding the Limits

A biopsy samples only part of an embryo. A result may not reflect every cell, and some tests may produce an inconclusive or mosaic result. The procedure may also affect whether an embryo remains available for transfer.

What Happens After Results Are Available?

We review the findings with you and explain what they do and do not show. Decisions about transfer depend on your medical history, the result and the advice of your care team. Depending on your circumstances, further genetic counseling or testing during pregnancy may be discussed.

Who May Consider PGT for Aneuploidy?

Is PGT for Aneuploidy Right for Everyone?

No. PGT for aneuploidy is not automatically recommended for every IVF patient. The evidence does not show that it improves the chance of having a baby for everyone. Age, previous miscarriage or an unsuccessful IVF cycle alone does not establish that testing will help. Your specialist can discuss potential benefits, limitations and costs in light of your individual history.

Can You Review Earlier PGS or Array CGH Results?

If you have results from an earlier IVF cycle, bring them to your consultation. We can review the information with you and discuss what questions may be relevant to your current treatment plan.

Discuss PGT in Tbilisi with Clinic Atlas

At Clinic Atlas in Tbilisi, Georgia, we can discuss your questions about embryo testing as part of IVF. Contact our team to arrange an individual consultation and ask which records may be useful to bring.