METHYLPHENIDATE AND METABOLITE, URINE

Test Documentation
Specimen Required
Send 1.0 mL urine (0.3 mL minimum) frozen in a screw-capped plastic vial.

Rejection Criteria
Samples received room temperature, refrigerated.

Methodology
High Performance Liquid Chromatography/Tandem Mass Spectrometry (LC-MS/MS)

Stability
Room temperature: Unacceptable; Refrigerated: Unacceptable; Frozen: 5 months

Reference Range
By report

Performed
Tuesday

Turnaround Time7-10 days
Test CodeUMPDM
CPT-4 Code (s)
80360 (80299)
LOINC Codes
Methylphenidate   3809-1  
Ritalinic Acid   33507-5  

Warde
Medical
Laboratory