Cancer care uses biological tests to guide treatment. Why doesn't psychiatry?

For galore radical with depression, schizophrenia oregon different psychiatric conditions, uncovering the close medicine means trying 1 medication, waiting weeks to spot however it goes and often trying another. Unlike conditions specified arsenic crab and Alzheimer's disease, determination are fewer reliable biologic tests to foretell which attraction volition assistance a idiosyncratic with a peculiar psychiatric disorder.