Useful for general testing in contexts of compliance and/or abuse. Preferred test to follow-up presumptive results.
Quantitative Liquid Chromatography-Tandem Mass Spectrometry
Mon, Thu, Sat
Transfer 2 mL urine with no additives or preservatives to an ARUP Standard Transport Tube. (Min: 1 mL)
Room temperature specimens.
Ambient: Unacceptable; Refrigerated: 3 weeks; Frozen: 3 months
|Ritalinic acid||50 ng/mL|
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.
Laboratory Developed Test (LDT)
80360 (Alt code: G0480)
|Component Test Code*||Component Chart Name||LOINC|
|2003116||Methylphenidate, Urn, Quant||3809-1|
|2003117||Ritalinic acid, Urn, Quant||33507-5|
- Focalin (Methylphenidate and Metabolite - Confirmation/Quantitation - Urine)
- Ritalinic Acid
- Urine ritalin concentration