Methylphenidate and Metabolite, Urine, Quantitative

Methodology: Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Positive Cutoff:   Methylphenidate: 10 ng/mL
                    Ritalinic acid: 50 ng/mL   
                             
The absence of expected drug(s) and/or drug metabolite(s) may indicate non-compliance, inappropriate timing of specimen collection relative to drug administration, poor drug absorption, diluted/adulterated urine, or limitations of testing. The concentration value must be greater than or equal to the cutoff to be reported as positive. Interpretive questions should be directed to the laboratory.

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.