ARUP's Laboratory Test Directory

Methylphenidate and Metabolite - Confirmation/Quantitation - Urine : 2003115

Mnemonic: METHPHENUR

Methodology: Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Performed: Mon, Thu
Reported: 1-7 days
Specimen Required: 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.

Stability (collection to initiation of testing): Ambient: Unacceptable; Refrigerated: 3 weeks; Frozen: 3 months
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
CPT Code(s): 80299
Cross References: Attenade (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine), Concerta (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine), Daytrana (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine), Dexmethylphenidate (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine), Focalin (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine), Metadate (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine), Methylin (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine), Methylphenidate (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine), Pain Management (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine), Pain Management, Methylphenidate Metabolite, Quantitative, Urine (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine) , Ritalin (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine), Ritalinic Acid (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine)