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Depression

Blood test might predict how well a depressed patient responds to antidepressants

Published in Drug Week, January 6th, 2012

2012 JAN 6 -- MAYWOOD, Ill. - Loyola University Medical Center researchers are reporting what could become the first reliable method to predict whether an antidepressant will work on a depressed patient.

The method would involve a blood test for a protein called vascular endothelial growth factor (VEGF). A Loyola study found that among depressed patients who had higher than normal blood levels of VEGF, more than 85 percent experienced partial or complete relief from depression after taking escitalopram (brand name Lexapro®). By comparison, fewer than 10 percent of depressed patients who had low levels of VEGF responded to the drug.

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