135 genes · 180 tested variants per person. A gene can have several tested variants. For example, we check three variants in MTHFR, and count MTHFR as one gene.
How we count genes and variants
We test selected DNA positions in genes and associated regions; this is not whole-gene sequencing. Each named gene is counted once, even when we test multiple variants. A variant ID is counted once across report topics. We do not add extra genes for overlapping annotations or alternate names. The HLA-DQ regional marker is included in the 180 variants, but is not counted as an extra gene.
These totals describe the test's coverage. They are not a count of findings that will be significant for you, and some tested markers may not appear as separate rows in your report.
Every person receives the same Works panel coverage and their own report. Pack size changes the number of people tested, not the genes or variants tested per person.