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Methylphenidate, serum-1442

Test info

Test name:

Methylphenidate, serum

Test number:

1442

Excellian order number:

LAB1442

Abbreviation:

MTP

Alternate names:

Ritalin

Specimen

Specimen type:

Serum

Collection container:

Red serum vial/tube, 5 mL

Volume:

2.0 mL

Minimum volume:

0.5 mL

Processing instructions:

Allow sample to clot
Spin within two (2) hours of sample collection
Immediately transfer serum to a Serum/plasma transfer vial/tube (MedTox), labelled as serum
Freeze

Transport container:

Serum/plasma transfer vial/tube (MedTox)

Alternate specimen type:

Heparin plasma

Alternate collection container:

Dk green heparin (Li or Na), no gel

Alternate collection instructions:

Immediately following collection, mix sample thoroughly by gently inverting 8 - 10, times to prevent clotting

Alternate processing instructions:

Spin within two (2) hours of sample collection
Immediately transfer plasma to a Serum/plasma transfer vial/tube (MedTox), labelled as the appropriate plasma type
Freeze

Transport and stability:

Frozen (strict) - 14 days

Refrigerated - NO

Ambient - NO

Reason for rejection:

Gel-barrier tubes are not recommended

Performance

Performing lab:

MedTox Laboratories (79): R-MX

Days set up:

TAT:

7 - 10 days

Method:

Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)

Clinical and Interpretive info

Reference ranges:

5.0 - 20.0 ng/mL

Clinical information:

Peak levels occur at 1-3 hours post dose

Trough levels are often not detectable

Billing

CPT codes:

G0480

Subject to medical necessity (Y/N):

Yes

LCD/NCD:

Medical necessity

Tracking

Date created:

06/17/2011

Revised date:

12/28/2023

Review date:

12/28/2023