Whole Exome Sequencing (WES)

Exome testing identifies genetic mutations responsible for unexplained symptoms, inherited diseases, and developmental conditions. By focusing only on the exome, which makes up about 1% of the genome but holds 85% of disease-causing mutations, the WES test offers a targeted, efficient, and cost-effective approach to genetic diagnosis.

The reporting time for a whole exome sequencing test usually falls between two and six weeks, based on the analysis required and the specific workflows followed by the testing laboratory. At FSG, we prioritize rapid and accurate reporting to support timely medical decision-making.

The main difference is in the scope. Whole genome sequencing analyzes the entire DNA sequence, while the WES test focuses only on the exons—the protein-coding regions. Exome testing is more targeted and cost-effective, capturing the areas most likely to reveal disease-causing mutations, making it a practical first step for many genetic investigations.