Preimplantation genetic testing (PGT), or preimplantation genetic screening (PGS), both refer to the process of testing embryos prior to their transfer into a patient during an in vitro fertilization (IVF) cycle. The aim of the testing is to screen embryos for genetic anomalies and improve the odds of a successful pregnancy. Preimplantation genetic testing for chromosomal aneuploidies (PGT-A) is the most commonly used screening method. PGT-A reference materials for the most common trisomies - 21, 18, 13 along with euploid material which can be used as a negative control. Formulated as genomic DNA from confirmed trisomic cells in buffer. Offered at a concentration suitable for PGT-A. Ideal for introduction to the PGT-A workflow at the WGA step. Compatible with NGS-based PGT-A assays.