Are you a primary care provider? A medical student, nursing student, or pharmacy student? Perhaps you are taking psychiatric medication. The reason you don't have a good reference for what labs to draw for psychiatric medications is because there's never been one. Now there is.
This app is free, easy, and best of all - animated. It covers routine psychiatric medications such as antidepressants and insomnia medications as well as more complicated ones such as lithium and clozapine.
All medications are clearly organized by category. There is no typing - just tap for instant animation.