Risperidone & metabolite-1880

Test info

  
Risperidone & metabolite
  
1880
  
82542.1
  
RSP
  
9-Hydroxyrisperidone
Risperdal
  

Therapeutic drug management

Specimen

  
Serum
  
  
3.0 mL
  
0.6 mL
  

Trough levels are most reproducible

  
  1. Allow sample to clot
  2. Spin
  3. Transfer serum to a Serum/plasma transfer vial/tube (MedTox), labelled as serum, within two (2) hours of sample collection
  
  
Heparin plasma (acceptable, but not preferred)
  

Dk green heparin (Li or Na), no gel

 

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

Refrigerated (preferred)

Ambient (OK) - 3 days

Frozen (OK)

Performance

  
MedTox Laboratories (757): R-MX
  
Tu, We, Th, Fr, Sa, Su
  
3 - 4 days
  

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

Clinical and Interpretive info

  

Expected steady state concentrations of risperidone and 9-hydroxyrisperidone (combined total) in patients receiving recommended daily dosages:

Risperidone + 9 - OH: 10 - 120 ng/mL

Billing

  
G0480
  
Yes
  

Tracking

  
01/02/2003
  
03/10/2021
  
05/12/2020