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HelpTest ID BLOD0396 Methylphenidate
Specimen Type/Requirements
Red top (Serum w/out gel) tube - Serum
Dark Green top (Lithium Heparin w/out gel) tube - Plasma
Dark Green top (Sodium Heparin w/out gel) tube - Plasma
Gray top (Sodium Fluoride) tube - Plasma
Test requires its own frozen aliquot. Do not thaw and refreeze.
Peak levels occur at 1-2 hours post dose. Trough levels are often not detectable.
Test is not affected by hemolysis or lipemia.
Specimen Volume
| Preferred Volume | 2.0 mL |
|---|---|
| Minimum Volume | 1.1 mL |
Performed Test Frequency
Testing schedule varies
Report Available
3 - 5 days
Methodology
LC/MS/MS
Performing Lab
Medtox
CPT
80360 AMA
82542 Medicare
Interface Build Information
| Result Code | Result Code Description |
|---|---|
| 19943 | Methylphenidate, S |
AKA
Ritalin, Concerta
Stability/Transport
| Room Temperature | Not Acceptable | |
|---|---|---|
| Refrigerated | Not Acceptable | |
| Frozen | 6 months | Preferred for transport |