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Risperidone

Clinical System Name

Miscellaneous Test

Synonyms

9-Hydroxyrisperidone
9-OH-risperidone
Risperdal

Sample Requirements

Specimen: Whole Blood

Container(s): Red or Dark Green/Sodium Heparin or Gold SST

Preferred Vol:7 mL

Minimum Vol: 1.5 mL

 

Note: Trough levels are preferred.

Processing Instructions

Reject due to:

Spin: Y

Aliquot: Y

Temp: -20 C

Storage location: CPA refrigerator send-outs rack

 

Off-site collection:

Stability

Specimen Type Temperature Time
Serum or Plasma Room temp 3 d
  Refrigerated Y
  Frozen Y

 

Availability

STAT Performed TAT
N Daily 7 - 10 d

 

Performing Laboratory

Medtox Laboratories

Department

Department:  

Medtox Laboratories

402 West County Road D
St Paul, MN 55112
 

Phone Number: (800) 832-3244

 

 

Reference Range

 

 

Risperidone & Metabolite 10-120 ng/mL

Expected steady state concentrations of risperidone and 9-hydroxyrisperidone (combined total) in patients receiving recommended daily dosages: 10 - 120 ng/mL.
 

Methodology

Method: LC/MS/MS

Analytical Volume: 0.6 mL serum or plasma, no result guaranteed

Limitations:

CPT Codes

80342 (TLZ 11/12/15)

Send Out Instructions

 

Reference Test Name:

Risperidone

 

Reference Test Number: 757
Instructions: Send out Mon - Thurs overnight via FedEx using a Medtox requisition and a Medtox paid airbill.