What is a whole genome sequencing (WGS) test?
While whole exome sequencing tests will analyze all of the portions of DNA responsible for producing proteins, it only accounts for 1.5% of a person's DNA. Researchers have found that DNA changes outside of this 1.5% can produce symptoms and conditions even though they do not code for proteins. With a whole genome sequencing (WGS) test, we analyze all of the base pairs of a person's DNA - about ~3.2 billion - to try and find a cause for any symptoms or conditions.
Because we look at so many more base pairs, the potential diagnostic yield of a WGS test is higher than whole exome sequencing tests.
When should I order a WGS test?
Unlike WES, WGS sequences genes as well as regions outside of genes. Therefore if a patients symptoms are broader, and less defined and/or you have had a lot of testing done with no answers or simply want to start with the most comprehensive sequencing test we have, this may be a good option. Please refer to our recommendations section for further guidance.
Included with your purchase:
- Simple and easy self-collection kit
- All the shipping supplies and documentation needed
- Accredited sample processing and analysis pipeline
- 30 min post-test counsellor session
Whole Genome Solo:
- For sequencing just one individual to find a rare disease
Whole Genome Duo:
- For sequencing one individual plus one parent to determine if there is a disease that is inherited - for a number of cases, this can help narrow down whether a particular DNA change is inherited or not (this option is used if only 1 parent can provide a sample)
- For pre-pregnancy carrier-screening in a couple (using samples from both members of the couple considering having children)
Whole Genome Trio
- For sequencing one individual plus both parents to determine if there is a disease that is inherited
For more information, contact us at info@discoverydna.ca.

