Red serum vial/tube, 5 mL
Screw-cap polypropylene frozen transport vial/tube - 4mL (LabCorp)
Drug dose and frequency, including time of last dose should be indicated on request form
Frozen (strict) - >2 weeks
Ambient - 24 hours
Refrigerated - NO
Liquid Chromatography Mass Spectrometry (LC/MS)
See report