How reliable and useful are the genetic tests?
The reliability of the test depends on the level of quality at which the analysis laboratory works (as with any other health exam). In general, they are reliable.
Diagnostic tests are useful enough to confirm a physician’s provisional diagnosis but not to rule out a disease. That limitation is linked to the level of knowledge of the pathology: there may be another causal mutation that has not yet been sufficiently identified at the scientific level.
Predictive tests calculate risks and probabilities. It is important that they be based on strict methodology, with proven results that are recognized at the scientific level. Such tests allow physicians to set prevention measures that are useful and important to care for the patient’s health in the long term.