Series of new antidepressants appeared in the treatment of central nervous system disorders in the last years. Into this group belong: 1. antidepressants of the 3rd generation which selectively inhibit serotonine reuptake; 2. thymoleptics - a group of compounds which have no anticholinergic effects and act as noradrenaline reuptake inhibitors or noradrenaline and serotonine reuptake inhibitors; 3. antipsychotics from the group of selective serotonine and dopamine antagonists. All they have less undesirable side-effects than classical tricyclic antidepressants of the first generation and thymoleptics of the second generation. Thus they are nowadays more often used as the drugs of the first choice and are therefore met more often in the biological material analyzed in toxicological laboratories. This contribution deals with the detection and identification of paroxetine, sertraline, venlafaxine, mirtazapine, tianeptine, risperidone and quetiapine in urine by thin layer chromatography.

        Key words: thin layer chromatography - antidepressants of the 3rd generation - detection in urine