Methylphenidate and Metabolite - Confirmation/Quantitation - Urine
2003115
 
Ordering Recommendation
Mnemonic
METHPHENUR
Methodology
Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Performed
Mon, Thu
Reported
1-7 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Random urine.  
Specimen Preparation
Transfer 2 mL urine with no additives or preservatives to an ARUP Standard Transport Tube. (Min: 1 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Room temperature specimens.  
Remarks
 
Stability
Ambient: Unacceptable; Refrigerated: 3 weeks; Frozen: 3 months  
Reference Interval
Interpretive Data
Drugs Covered: Methylphenidate and ritalinic acid

Positive Cutoff:
Methylphenidate: 10 ng/mL
Ritalinic acid: 100 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.

For medical purposes only; not valid for forensic use.

See Compliance Statement B: www.aruplab.com/CS
Note
CPT Code(s)
80299
Components
Component Test Code*Component Chart Name
2003116Methylphenidate, Urine
2003117Ritalinic acid, Urine
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • Attenade
  • Attenade
  • Daytrana
  • Dexmethylphenidate
  • Focalin (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine)
  • Metadate
  • Methylin
  • Methylphenidate
  • Ritalin
  • Ritalinic Acid
  • Urine ritalin concentration