Researchers at the University of Illinois Chicago (UIC) in the US have identified a biomarker to track depression and antidepressant response.
Found in human platelets, the biomarker can be identified with the help of a blood test and used to track the extent of depression.
The blood test can help to determine the efficacy of antidepressant therapies in individual patients.
UIC stated that the research is developed from previous studies that show depression is consistent with decreased levels of adenylyl cyclase, a small molecule within the cell.