As previously reported, psychiatric drugs are among the most likely to be involved genetically-mediated drug toxicity, due to mutations in various metabolizing cytochrome p450 genes. We conducted an informal survey on a LinkedIn group for psychiatrists, asking them how often they genotyped their patients prior to prescription of drugs with CYP companion diagnostic indications in the labels.

Always 0
Sometimes 3
Never 10

Survey Link

This “study” is of course fraught with caveats as to its reliability, but is interesting nonetheless.