Is genetic carrier screening done with next-generation sequencing?

Carrier screening looks for selected gene variants that may not cause illness in the person tested but could be passed to a child. Next-generation sequencing reads many DNA regions in parallel, allowing a panel to examine multiple genes from one sample. Panels differ in the conditions included, the regions covered, and how certain findings are reported. A result may be negative, show carrier status, or need further clarification; it does not assess every genetic condition.

Ask what conditions the panel includes, whether both partners should test, and whether a blood or saliva sample is used. Share ancestry, family history, previous genetic results, and pregnancy plans. Genetic counselling can explain the limits of the panel and help interpret a finding. If one partner is identified as a carrier, testing the other partner and discussing reproductive options may be appropriate.

Carrier screening is not an emergency test, but prompt genetic counselling is useful when pregnancy is planned, a pregnancy is already underway, or a family condition has been identified. Contact the ordering clinician when a report says a result is uncertain, positive, or requires family testing so that decisions are based on the full report rather than a single gene label.

Ask which sequencing method and panel are being used, what a negative result cannot rule out, how variants are classified, and whether testing should include your partner. Clarify turnaround expectations, privacy arrangements, and who will explain the report.