 Until recently, pharmacogenetic testing has been expensive and time-consuming. New technology in the past few years makes it possible for cheaper and faster testing. One of the companies that offer pharmacogenetic testing services, Genomind LLC, provides genotyping of variants GeneceptTM Assay that are relevant to psychiatric drug response. For example, the serotonin 2C receptor gene HTR2C has variants that protect patients from antipsychotic drug induced weight gain -759CT, rs3813929; a deletion variant of the dopamine D2 receptor gene DRD2 suggests poor efficacy with antipsychotic drug treatment -141C InsDel, rs1799732; the short allele of the serotonin transporter gene SLC6A4 is associated with antidepressant side effects. 