Depends on the company and what you are testing for. 23 &me, Ancestry.com I’ve seen values from 4%-40% sensitivity.What's the accuracy of genetic testing as of recently? I know a year or 2 ago they were giving false positives 30-50% of the time. If you tested a person multiple times the results were different.
Genesight (pharmacogenetics and Biomarkers for drug metabolism) very high sensitivity, above 90%. I’ve heard above 90% for testing sensitivity. We used Gene Dx for my epilepsy testing. It had sensitivity above 90%.