Duloxetine, Serum (Cymbalta)
Collect red top or lavender EDTA, centrifuge and transfer 1 mL serum/plasma to a screw top transport tube, indicate sample type on tube and send refrigerated.
Sample must be light protected if sent room temp.
High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)
Room temp: 30 days, Refrigerated: 30 days, Frozen: 1 year