Methylphenidate
| Abbrev Code: | XMISC | ||
| Order Code: | LAB4909 | Order Name: | Methylphenidate |
| Synonyms: | Ritalin | ||
| Methodology: | Liquid Chromatography/Tandem Mass Spectrometry | ||
| CPT Codes: | 80360 x1 | ||
| Turnaround Time: | Specimens are sent to reference laboratory Mon-Fri; results are reported within 3 days. | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 4 mL |
| Minimum\Peds Volume: | 1.2 mL |
| Container: | Red (no gel) Alternate Containers: Green (lithium heparin, no gel), Green (sodium heparin, no gel) |
| Collection Instructions: | Peak levels occur at 1-3 hours post-dose; trough levels often not detectable. |
| Causes for Rejection: | Specimen received unfrozen. |
Processing and Shipping
| Specimen Processing: | Centrifuge and aliquot 2 mL, 0.5 mL minimum. Freeze immediately. |
| Shipping Instructions: | Ship on dry ice. |
| Stability: | Room temperature or refrigerated unacceptable; 14 days frozen. |
| Test Performed at or Referral Lab | Lab Sendouts (MedTox) |
| Referral Lab number: | 79 |
Interpretive
| Reference Range: | 5.0-20.0 ng/mL |
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