What is PGT-M?
PGT-M, or Preimplantation Genetic Testing for Monogenic Disorders, is an advanced genetic test performed during IVF to detect embryos that carry specific inherited genetic diseases. These are single-gene conditions such as thalassemia, sickle cell anemia, cystic fibrosis, and Huntington’s disease.
PGT-M allows only genetically unaffected embryos to be selected for transfer, helping prevent the transmission of serious genetic disorders. At Zemya IVF & Fertility Clinics, we offer PGT-M testing in Delhi as part of our comprehensive and ethical fertility care.
Who Should Consider PGT-M?
PGT-M is especially recommended for couples or individuals who:
- Are known carriers of a specific genetic disorder
- Have a family history of single-gene conditions
- Already have a child affected by a genetic disease
- Are both carriers of the same autosomal recessive gene
- Have had multiple miscarriages related to genetic problems
- Are using donor gametes and want to reduce genetic risk
- Wish to avoid prenatal diagnosis and pregnancy termination
Zemya IVF & Fertility Clinics provides genetic counseling to help determine whether PGT-M is necessary in your case.
Benefits of PGT-M
- Prevents passing on inherited genetic diseases
- Helps select healthy embryos for transfer
- Reduces the emotional and medical risks of pregnancy termination
- Increases the chance of a healthy baby
- Supports informed family planning
- Can be combined with PGT-A for chromosomal screening
PGT-M Procedure Step-by-Step
Step 01
Genetic workup of the parents
A blood sample is collected from both partners. Genetic testing is performed to identify the specific gene mutation. A customized probe is developed for your unique condition, which may take 4 to 6 weeks. In some cases, DNA from family members may also be required.
Step 02
IVF and embryo creation
The female partner (or egg donor) undergoes ovarian stimulation. Eggs are collected and fertilized with sperm using ICSI in the IVF lab. Embryos are grown to the blastocyst stage (day 5 or 6).
Step 03
Embryo biopsy
A few cells are gently removed from the outer layer (trophectoderm) of each embryo. The embryos are frozen until test results are received.
Step 04
Genetic testing
The biopsied cells are sent to a genetics lab. Using the custom probe, each embryo is tested to determine whether it is affected, a carrier, or unaffected.
Step 05
Embryo selection and transfer
Only unaffected embryos are chosen for transfer. In certain cases, carrier embryos may be considered, depending on the condition and risks involved.
Step 06
Pregnancy monitoring
After transfer, a blood test is done 12–14 days later to confirm pregnancy. Regular scans and prenatal care follow
Risks and Limitations of PGT-M
- IVF is required, even for fertile couples
- Fewer embryos may be available for transfer
- Embryo biopsy and freezing carry a small risk
- The probe development process takes time and may require family participation
- PGT-M only tests for the targeted gene, not all genetic or chromosomal conditions
- Emotional distress may occur if no healthy embryos are found
Despite these limitations, PGT-M is the most reliable method to avoid the inheritance of known single-gene disorders.
Why choose Zemya IVF & Fertility Clinics?
At Zemya IVF & Fertility Clinics, we design each treatment plan around your specific needs and medical history.
With over 40+ years of combined experience and more than 10,000 healthy deliveries, our team is committed to helping you achieve your dream of parenthood with skill, care, and compassion.
Here’s what makes Zemya IVF & Fertility Clinics one of the top 5 IVF and fertility centres in Delhi:
Each treatment is designed specifically around your medical history, goals, and emotional needs.
Our doctors and embryologists are internationally accredited and bring decades of hands-on fertility experience to every case.
We explain everything clearly—no hidden fees, no unnecessary procedures.
Get access to the best care at a cost that respects your budget.
From lab facilities to diagnostic equipment, we use the latest in reproductive science to increase your chances of success.
Whether you’re just starting out or seeking a second opinion, Zemya IVF & Fertility Clinics is here to guide you every step of the way, with experience you can trust, and care you can feel.
Frequently Asked Questions
PGT-M tests for specific genetic diseases (single-gene mutations). PGT-A checks for chromosomal number abnormalities such as Down syndrome.
No. PGT-M requires IVF because embryos need to be tested before being transferred.
No. With skilled embryologists, the biopsy procedure is safe and does not harm the inner part of the embryo that develops into the baby.
If no healthy embryos are available, the couple may consider another IVF cycle, using donor gametes, or receiving further genetic counselling.
Initial genetic mapping and custom probe development can take 4–6 weeks. The testing and embryo analysis are completed after the IVF cycle.
Yes. As long as the specific gene and mutation are identified, custom testing can be developed—even for rare disorders.
PGT-M is highly accurate for the targeted condition, but no test can guarantee a perfectly healthy baby. Prenatal screening is still advised during pregnancy.