Lack of relationship of neuroleptic dose and blood serum levels to neuropsychological performance on the LNNB in chronic schizophrenia.

The relationship of neuroleptic dose and blood serum levels to performance on the Luria Nebraska Neuropsychological Battery in chronic schizophrenics was assessed. Thirty chronic schizophrenics were individually administered the LNNB and a small sample of blood was obtained. No significant correlation between neuroleptic serum levels and test performance in these subjects was found although different conversion formulas related differentially to the blood serum levels.