High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)
Concerta; Methidate; Methylphenidate Metabolite; Ritalin
Serum or Plasma
Other Reference Test
1.5-4 mL Blood
Red Top (No Additive)
Sample should be collected 1-6 hours post dose. Plasma collected in an EDTA (lavender-top) tube is also acceptable. Serum or plasma separator tube are unacceptable.
Room Temp: Unacceptable; Refrigerated: Unacceptable; Frozen: 5 Months
Specimen received room temp; Specimens received refrigerated; Serum or Plasma Separator Tubes (SST/PST)
1 mL Serum or Plasma
0.7 mL Serum or Plasma
Centrifuge and separate serum or plasma promptly into a plastic screw capped vial. Complete a NMS Labs requisition and submit with specimen frozen.
Methylphenidate; Retalinic Acid