أفضل أطباء PGT-A/PGT-M (الاختبار الجيني للأجنة) في تشيناي

PGT-M testing focuses specifically on single-gene disorders and does not automatically include PGT-A chromosome counting. Patients usually need separate laboratory orders for both screenings on the same biopsy sample. Monogenic disease testing targets known hereditary mutations, whereas aneuploidy screening evaluates total chromosome numbers. Discuss combining both tests with your fertility specialist during your initial treatment planning.

PGT-A checks for missing or extra chromosomes, while PGT-M detects specific inherited genetic diseases. Chromosome abnormalities often lead to implantation failure or early pregnancy loss. Single-gene disorder testing requires prior genetic mapping of the parents to create specific testing probes. Both procedures require an embryo biopsy taken at the blastocyst stage before embryo transfer.

Embryologists collect a few cells from the outer embryo layer, called the trophectoderm, on day five or six. The inner cell mass that forms the fetus remains untouched during this delicate procedure. The extracted cells are frozen and sent to a specialised genetics laboratory for DNA analysis. Biopsied embryos are cryopreserved while awaiting genetic results.

Genetic testing laboratory results generally take two to three weeks after the embryo biopsy procedure. Next-generation sequencing analysis requires time to process genomic DNA from the trophectoderm sample. Patients can receive these reports electronically while planning their frozen embryo transfer cycle. Your medical team discusses the findings before scheduling further procedures.

Selecting a top IVF physician involves evaluating medical board certification, specialised genetics training, and clinic laboratory accreditations. Patients should look for doctors who collaborate directly with experienced embryologists and clinical geneticists. Comparing credentials across official registration databases helps families select a practitioner who matches their specific medical requirements.

Comparing embryo testing costs requires requesting itemised quotes that separate clinic biopsy fees from external genetics laboratory charges. Some clinics bill per embryo tested, while others offer bundled packages for a specific number of samples. Patients should also inquire about courier charges for biopsy transportation and cryopreservation fees for frozen embryos.

Evaluating hospital quality relies on verifying national accreditation standards rather than unverified success claims. Standardised medical metrics assess laboratory safety, equipment calibration, and embryology protocols. Patients should request information regarding formal clinic accreditations from national bodies such as NABH when selecting a fertility hospital in Chennai. Checking these administrative standards ensures proper care protocols.

PGT-A screens specifically for numerical chromosome abnormalities, known as aneuploidies, but cannot detect microdeletions or structural gene mutations. Structural abnormalities or single-gene defects require specialised assays such as PGT-M or PGT-SR. Diagnostic screening during pregnancy remains recommended even after successful preimplantation testing. Fertility specialists explain these screening limits during pre-treatment planning.

Trophectoderm biopsy performed at the blastocyst stage carries a small risk, but experienced embryologists minimize potential damage. Biopsying outer cells on day five avoids disturbing the inner cells that develop into the fetus. Research indicates that skilled laboratory staff maintain high embryo survival rates following freeze-thaw cycles and biopsy procedures.

Qualified reproductive geneticists in India typically possess post-graduate medical degrees in obstetrics, gynecology, or medical genetics. Specialised training certificates in assisted reproductive technology and embryology demonstrate relevant expertise. Patients can confirm these medical degrees and state medical council registrations through the National Medical Commission public database. Verifying official records ensures legitimate qualifications.