METHYLPHENIDATE AND METABOLITE QUANTITATION RITALIN, URINE
Marquette General Health System

General Info

HLAB/HOL Code

   RTLNM

MGH LIS Test No

   4894

Schedule

    

Testing Time

    

Testing Lab

   Mayo Labs

QORR Test Code

   R4894

Specimen Info

Type

   Urine  

Volume

   10 mL

Temperature

   Frozen

Preservative

    

Collection Info

   Specimen should be collected 1 to 6 hours post dose.  Freeze and
ship frozen.  It is very important to keep specimen frozen.
 
Specimen Acceptability

Methods
HPLC/MS

Clinical Utilities
Therapeutic Drug Monitoring

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

Component Information

Name

   METHYLPHENIDATE 

Method

   HPLC/MS 

CPT Code

   82542 

Units

   ng/mL 
Ref Range   100-900 ng/mL in the 8 hours following a 25 mg oral dose to adults. Concentrations as high as 3300 ng Methylphenidate/mL have been reported in the 6 hour urine of children following a 10 mg dose. 
Reflex Reason    
     

Name

   RITALINIC ACID 

Method

   HPLC/MS 

CPT Code

    

Units

   ng/mL 
Ref Range   Components as high as 64,000 ng Ritalinic Acid/mL have been reported in the 6 hour urine in children following a 10 mg Methylphenidate dose. 
Reflex Reason    
     
Collection Notes

Additional Comments

 

Questions or Comments email support@mgh.org

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