Detect the presence of the kratom alkaloid mitragynine, which has both stimulant and opioid effects
Sterile cup w/yellow cap, 90 mL (LabCorp), without preservative
Refrigerated (preferred)
Frozen
Ambient: < 3 days
Initial presumptive testing by mmunoassay (IA) at a testing threshold of 1.0 ng/mL
Presumptive positives confirmed by definitive liquid chromatography/tandem mass spectrometry (LC/MS-MS) at a testing threshold of 1.0 ng/mL
Screen: Negative
Confirmation (at a threshold of 1.0 ng/mL))