Full-length genomic sequencing of blood-derived DNA for detection of pathogenic mutations in specified genes (full-length mutational analysis)

What This Test Measures

This test analyzes the complete coding regions (exons) of selected genes in your blood DNA. It detects any changes (mutations) that might be associated with inherited disorders, including those affecting metabolism, blood disorders, or cancer predisposition. The genes tested are chosen based on clinical suspicion or family history.

Why It’s Ordered

Your healthcare provider may recommend this test if you have a family history of genetic conditions, symptoms suggestive of a genetic disorder, or if you’re at higher risk due to ethnicity or other factors. It’s also used in prenatal or preconception counseling to assess genetic risks for future children.

Sample Collection and Preparation

A blood sample is drawn, typically from a vein in your arm. The DNA is extracted from the blood cells and prepared for sequencing. This process preserves your genetic material for detailed analysis without altering its integrity.

What to Expect Before the Test

No special preparation is needed beyond standard blood draw precautions (e.g., fasting may not apply). If you’re pregnant or breastfeeding, inform your provider before testing. Avoid smoking or caffeine 30 minutes before the draw if instructed.