Trisomy 21 Standard for counting based assays, 5% fetal fraction, 1ug in TE

High-purity cfDNA standard, 1 µg in TE buffer, precisely blended to represent a Trisomy 21-positive sample. This reference material consists of cfDNA from a Trisomy 21 cell line mixed with a normal cfDNA background to achieve a 5% fetal fraction.

Functions as the cornerstone positive control for Non-Invasive Prenatal Testing (NIPT) assays. It is used to develop, validate, and routinely monitor the performance of counting-based methods for the detection of Trisomy 21 (Down syndrome).

Store at -20°C or below to maintain material integrity. This standard is critical for establishing the limit of detection, calibrating instrumentation, and ensuring the clinical accuracy of NIPT platforms.