Do the “genetic testing” services on the market also use Whole Genome Sequencing technology?

For the genetic testing products and services consumers purchase over the counter or online (Direct-to-consumer genetic tests, DTCGTs), some of them focus on specific areas without the use of Whole Genome Sequencing technology. The entire process, from publicity, marketing, to delivery of these products, is done directly by the service provider to the consumers. There may not be healthcare professionals involved.

From a medical point of view, the public should first consult healthcare professionals and obtain their assessment and opinion before deciding whether they should undertake any diagnostic or therapeutic investigation (including genetic testing).