The Seraseq ctDNA Mutation Mix v4 AF0.5% is an advanced reference material for validating NGS-based ctDNA assays, featuring 93 unique variants across 71 genes. With a low variant allele frequency of 0.5%, it enhances detection accuracy and streamlines assay validation by reducing background noise and integrating seamlessly into workflows. This product sets itself apart with its optimized fragmentation process and comprehensive variant coverage, making it essential for clinical implementation in precision medicine.