Home
HelpMethylphenidate and Metabolite, Random, Urine
Additional Codes
LAB3901
Additional Testing Requirements
If urine creatinine is required or adulteration of the sample is suspected, also order ADULT / Adulterants Survey, Random, Urine. For more information, see ADULT / Adulterants Survey, Random, Urine.
Specimen Required
Supplies: Sarstedt Aliquot Tube 5 mL (T914)
Collection Container/Tube: Plastic urine container
Submission Container/Tube: Plastic, 5-mL tube
Specimen Volume: 5 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
Additional Information:
1. No specimen substitutions.
2. STAT requests are not accepted for this test.
3. Submitting less than 1 mL will compromise the ability to perform all necessary testing.
Specimen Type
UrineSpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 10 days | |
| Frozen | 28 days |
Reference Values
Negative
Cutoff concentrations by liquid chromatography tandem mass spectrometry:
Methylphenidate: 10 ng/mL
Ritalinic Acid: 50 ng/mL
Day(s) Performed
Monday, Wednesday, Friday
Report Available
2 to 4 daysSpecimen Retention Time
14 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
80360
G0480 (if appropriate)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| MPHNU | Methylphenidate and Metabolite, U | 104676-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 608882 | Methylphenidate by LC-MS/MS | 20548-4 |
| 608883 | Ritalinic Acid by LC-MS/MS | 72790-9 |
| 608884 | Methylphenidate Interpretation | 69050-3 |
Forms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.