I recently had my whole genome sequenced with Dante Labs. What surprised me most was not how much data I received, but how difficult it was to turn all that data into something I would actually do differently.
That made me look more closely at the wider consumer genomics market.
Whole-genome sequencing is no longer something reserved for research labs or unusual clinical cases. Consumers can now get 30x whole-genome sequencing for a few hundred dollars, with health reports and downloadable genomic data included to varying degrees.
But once several companies can sequence essentially the same genome, the more interesting question becomes:
What happens after the sequencing?
That is where these services increasingly differ.
Whole-genome sequencing is not the same as a normal DNA test
Services such as 23andMe and AncestryDNA primarily use genotyping, which examines selected positions in your DNA rather than sequencing nearly the whole genome.
That can still provide ancestry estimates, relative matching, traits, and selected health information.
Whole-genome sequencing, or WGS, reads far more of your DNA and produces a much larger underlying dataset. Some providers also use that data for ancestry analysis. In my Dante Labs account, for example, a Clinical Ancestry report estimates population background and uses it to support variant interpretation, drug-response analysis, and future polygenic-risk calibration.
So if your main goal is genealogy or a simple ancestry estimate, WGS may be more than you need.
But if you want a high-depth copy of your genome that can support health interpretation and be reanalyzed later, WGS becomes more interesting.
This keeps the ancestry point without repeating the same “more data / future reinterpretation” idea too many times.
What does 30x whole-genome sequencing mean?
You will see 30x repeatedly when comparing WGS providers.
In simple terms, it means each position in the genome is read around 30 times on average. Multiple reads help improve confidence in the final variant calls.
For health-focused consumer sequencing, 30x is generally the level I would compare rather than very low-coverage options such as 1x sequencing.