Contains eight opioid drugs or drug metabolites, at concentrations above and below assay cutoffs. This control has been tested by GC/MS, LC/MS/MS and other methods to confirm the recovery of drug concentration, with representative values provided for screening and confirmatory methods.
- Human urine
- 3 year shelf-life at -20°C to -70°C
- 30 day open-vial stability at 2–8°C
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