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Flurazepam and Desalkylflurazepam, Serum or Plasma
Therapeutic drug management
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
Flurazepam: 0−30 ng/mL; desalkylflurazepam: 30−150 ng/mL; combined total: 30−180 ng/mL
Serum or plasma, frozen
Serum or plasma should be separated from cells immediately. Transfer separated serum or plasma to a plastic transport tube and freeze immediately.
Freeze immediately; ship on dry ice.
Causes for Rejection
Gel-barrier tubes; sample not received frozen