87920:METHYLPHENIDATE (RITALIN) LEVEL
Author PeaceHealth Laboratories
Modified by
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| Methodology: |
Gas Chromatography (GC) / Nitrogen Phosphorus Detection (NPD) |
| Edit Date: |
4/6/2010 |
| Performed: |
Daily |
| Released: |
24-48 hours after setup at PeaceHealth Laboratories’ reference lab |
| CPT Code: |
82542-90 |
| Specimen Collection Details |
| Collection: |
One 5 mL red top tube. Do not use serum separator tube (SST). Also acceptable: Plasma, any type. |
| Handling: |
Allow to clot, centrifuge and separate serum or plasma into a plastic vial. Freeze immediately. |
| Standard Volume: |
3 mL serum or plasma. |
| Minimum Volume: |
0.6 mL serum or plasma (does not allow for repeat testing or confirmation). |
| Transport: |
Frozen on dry ice. |
| Comments: |
Peak levels occur at 1-3 hours post dose; trough levels often not detectable. |
| Rejection Criteria: |
Use of SST. |
