METHYLPHENIDATE (RITALIN)

General Information

HLAB/HOL Code: MPD
UPHSM LIS Test #: 968
Schedule: Monday - Sunday
Testing Time: 3 days
Testing Lab: MEDTOX

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 3.0 mL Plasma
Temperature: Frozen
Tube Type: 1 Green top Sodium Heparin tube
Collection Info:
Draw blood in a greent op (sodium heparin) tube.  (Plasma gel tube is not acceptable.)
Spin down and freeze immediately. Send 3 mL of sodium heparin plasma frozen in plastic vial on dry ice.
Note:
1. Indicate plasma on request form.
2. Label specimen appropriately (plasma).
3. Peak levels occur at 1 to 3 hours post dose; trough levels  often not detectable.
Volume: 3.0 mL Serum
Temperature: Frozen
Tube Type: 1 Red Top
Collection Info:
Draw blood in a plain red top tube. (Serum gel tube is not acceptable.) Spin down and freeze immediately. Send 3 mL serum frozen in plastic vial on dry ice.
Note:
1. Indicate serum on request form.
2. Label specimen appropriately (serum).
3. Peak levels occur at 1 to 3 hours post dose; trough levels  often not detectable.

Methods

Liquid Chromatography/Tandem Mass Spectrometry

CPT Codes

82542

* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Reference Range

Reference Range: 5.0-20.0 ng/mL

Test Performed By
Medtox Laboratories, Inc.
402 W. County Road D
St. Paul, MN 55112