Intended use: Quetiapine determination kit is an in vitro diagnostic test for the detection of quetiapine in human serum and plasma specimens.

Quetiapine is approved for schizophrenia, acute manic episodes, and adjunctive treatment for major depressive disorder.

The therapeutic range of quetiapine is between 100 ng/mL to 1000 ng/mL. Patients commonly experience somnolence, dizziness, and orthostatic hypotension. Based on the consensus guidelines of therapeutic drug monitoring (TDM) in clinical practice, TDM of Quetiapine is useful.  In addition to the therapeutic range the individual clearance related to the expected clearance may help to optimize individual pharmacotherapy, especially for combination therapy or in case of incompliance or abnormal metabolism.