A pharmacogenomic test provides which medication will be useful with minimal side effects rather than trying various different medications correct?

Very expensive test: Pharmacogenetics/pharmacogenomics is the study of how inherited genetic differences impact the way drugs or medications affect a person. These genetic differences can impact the way a drug is absorbed or metabolized and thereby influence drug response. Pharmacogenomic tests may provide information about a person’s genetic makeup to help doctors decide which medications and doses might work best.