The dexamethasone suppression test in depression--a Singapore study.

The Dexamethasone Suppression Test (DST) has been evaluated as a biological marker in psychiatry especially in depressive illness. A study on the DST involving 20 patients in Tan Tock Seng Hospital, Singapore, who fulfilled the Research Diagnostic Criteria for major depressive disorder and with 21 healthy controls was carried out. Two out of the 20 patients had abnormal DST responses.