Professional
Technical
IVT
PGT-A
Also written as: PGT-A — Preimplantation Genetic Testing for Aneuploids
Preimplantation genetic testing for aneuploids, screening embryos for chromosomal abnormalities before transfer.
Full Definition
Preimplantation genetic testing for aneuploids (PGT-A) is a procedure used during in vitro fertilization to screen embryos for chromosomal abnormalities before implantation. The test examines all 23 pairs of chromosomes to detect gains or losses that could lead to implantation failure, miscarriage, or genetic conditions. PGT-A is typically recommended for patients of advanced maternal age, recurrent pregnancy loss, or repeated IVF failures.
Usage
Usage note: Hyphenate when used as an adjective (PGT-A testing). Formerly known as PGS.
In Context
- "The clinic's PGT-A results showed that three of the seven embryos were chromosomally normal." — IVF laboratory report
- "Patients should understand that PGT-A cannot detect all genetic conditions." — Genetic counseling documentation
Also known as
preimplantation genetic screening
PGS
Don't confuse with
PGT-M
PGT-SR