Methylphenidate, Serum/Plasma

Test Code: TD_5958
CPT Code(s): 80360

Test Details

Alternative Name(s)

Concerta, serum/plasma
Focalin, serum/plasma
Metadate, serum/plasma
Methylin, serum/plasma
Ritalin, serum/plasma

Test Includes

Methylphenidate, Serum/Plasma

Methodology

Liquid chromatography-tandem mass spectrometry (LC-MS/MS)

Rejection Criteria

Room temperature samples
Refrigerated samples
Samples collected in serum separator tube

Reference Range(s)

By report

Specimen Requirements

Preferred Specimen

Plain red top tube

Minimum Volume

0.7 mL serum or plasma

Sample Stability

Unacceptable room temperature
Unacceptable refrigerated
5 months frozen

Transport Temperature

Critical Frozen

Collection Instructions

Allow sample to clot in an upright position for at least 60 minutes, then centrifuge sample and transfer serum to a plastic transport tube within 2 hours of collection. Clearly label tube as serum from a plain red top tube. Freeze
Note: Sample should be collected 1-6 hours post-dose.
When multiple tests are ordered, submit separate tube for this test.

Alternative Specimen

2 mL EDTA (lavender top) plasma. Centrifuge sample and separate plasma from cells within 2 hours of collection. Transfer plasma to a plastic transport tube. Clearly label tube as EDTA plasma. Freeze.
Note: Sample should be collected 1-6 hours post-dose.
When multiple tests are ordered, submit separate tube for this test.