PGT-A abroad: what to verify before paying for embryo chromosome screening

PGT-A is one of the easiest IVF add-ons to misunderstand because the logic sounds obvious: test embryos, choose a chromosomally normal one, improve success. The evidence and the real-world decision are more complicated.

What PGT-A does

PGT-A samples cells from an embryo, usually at the blastocyst stage, and assesses chromosome number. The embryo is typically frozen while genetic testing is performed.

What the HFEA says about effectiveness

HFEA currently rates PGT-A red for increasing the chance of having a baby for most fertility patients, because randomized-trial evidence does not show improved live-birth chances for the general IVF population and the selection process can reduce the number of embryos available for transfer.

HFEA separately rates PGT-A green for reducing miscarriage risk for most fertility patients, while emphasizing that reducing miscarriage does not necessarily increase the chance of a live birth.

This does not mean PGT-A is useless

PGT-A can provide chromosome information that may be clinically useful in selected situations. The point is to ask what decision the test will change for you, not whether the clinic offers it.

Verify the genetics laboratory

The IVF clinic may biopsy the embryo while a separate genetics laboratory performs the analysis. Ask for the lab's name, accreditation/regulatory status in its jurisdiction, testing platform, reporting categories, turnaround time, and what happens if a sample is inconclusive.

Mosaic embryos

Some results are reported as mosaic, meaning the sampled cells contain a mixture of chromosomal findings. Clinics and labs can differ in thresholds, reporting, counseling, and whether they will transfer certain mosaic embryos. Ask before testing, not after receiving a confusing report.

PGT-A versus PGT-M

PGT-A screens chromosome number. PGT-M is designed for a specific single-gene condition in a family and usually requires case preparation. They solve different problems.

International legal differences

Countries differ on embryo testing, sex selection, embryo disposition, genetic-lab regulation, and consent requirements. A test available in one destination may be restricted or handled differently in another.

The logistics chain

1. Embryo reaches blastocyst stage.
2. Clinic biopsies trophectoderm cells.
3. Embryo is cryopreserved.
4. Biopsy is analyzed locally or shipped to genetics lab.
5. Report returns.
6. Clinic/genetic counselor interprets result.
7. Transfer is scheduled later.

What the quote should include

• Embryo biopsy fee
• Genetics lab fee
• Number of embryos included
• Extra-embryo charge
• Cryopreservation
• Storage period
• Re-biopsy policy for no-result samples
• Genetic counseling if needed
• Frozen embryo transfer fee

Questions to ask

• Why do you recommend PGT-A in my case?
• What outcome do you expect it to improve?
• Which lab performs testing?
• How are mosaics reported and managed?
• What happens to embryos classified abnormal or inconclusive?
• What is the total cost including the later frozen transfer?

Frequently asked questions

PGT-A is a selection test, not a live-birth guarantee.

Ask whether the test changes embryo order or embryo eligibility

A clinic may use PGT-A to rank embryos for transfer, exclude certain results, or counsel about mosaic transfer. Those are not equivalent policies. Get the clinic's written embryo-disposition and mosaic-transfer policy before biopsy.

False certainty is a major counseling risk

PGT-A samples several trophectoderm cells, not every cell in the embryo and not the future fetus directly. Results are highly informative about the tested sample but do not convert an embryo into a guaranteed healthy pregnancy.

What if every embryo is reported abnormal?

Ask in advance whether the clinic offers genetic counseling, whether re-analysis or re-biopsy is ever considered, what happens to embryos under local law and consent, and whether you have the right to obtain the raw/final genetics report for an independent opinion.

PGT can change the cost of the entire cycle

The price is not just the lab test. Add blastocyst biopsy, freezing, storage, genetic analysis, counseling, and a later frozen transfer. In some destinations, shipping biopsy samples to another country can add another laboratory/logistics layer.

International coordination checklist

• One named clinical coordinator at the overseas clinic
• One local monitoring/lab option at home
• Medication plan in a clearly stated time zone
• Written emergency contact instructions
• Flexible travel where a biological milestone controls the date
• Copies of records and invoices kept by the patient
• Clear plan for what happens after you return home

The purpose of this checklist is not to make IVF travel complicated. It is to prevent a predictable failure of coordination from becoming the reason a medically sound cycle turns into a logistical crisis.