The effect of sertraline on routine blood chemistry values.

Sertraline is an antidepressant of the selective serotonin reuptake inhibitor (SSRI) class. Although SSRIs are believed to have a milder side effect profile than the tricyclic antidepressants, there are some potentially serious side effects. These include hyponatremia, which has been seen with each of the SSRIs. We reviewed the charts of 246 patients treated with sertraline at a veterans' hospital. We obtained values for each patient's basic chemistry panel (sodium, potassium, chloride, glucose, carbon dioxide, blood urea nitrogen, and creatinine) before and after institution of sertraline therapy. We studied the patients' ages and sertraline doses to see if there was a relationship between any laboratory value changes and these variables. We found no relationship between maximum sertraline dose, age, and changes in routine blood chemistry results with the exception of a small (0.5%) contribution of maximum sertraline dose to variance in serum creatinine levels. Sertraline therapy was not noted to cause any significant changes in serum sodium levels.