Professional
Technical
In the Industry Vocabulary Test
Trophectoderm Biopsy
A procedure to remove cells from the outer layer of a blastocyst for genetic testing without affecting the inner cell mass.
Full Definition
Trophectoderm biopsy is a technique used in preimplantation genetic testing where several cells are removed from the trophectoderm layer of a day 5-6 blastocyst. This method is preferred over earlier biopsy techniques as it samples cells that will form the placenta rather than the fetus. The procedure requires skilled embryologists and specialized equipment to ensure minimal trauma to the embryo while obtaining sufficient genetic material for analysis.
Usage
Usage note: Commonly abbreviated as TE biopsy in clinical documentation.
In Context
- "Trophectoderm biopsy was performed on day 5 blastocysts prior to vitrification." — Laboratory protocol
- "The clinic reported a 95% success rate for trophectoderm biopsy procedures." — Quality assurance report
Also known as
TE biopsy
trophectoderm sampling
Don't confuse with
polar body biopsy
cleavage stage biopsy