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25150 Olanzapine, Serum (756)

Olanzapine, Serum (756)
Test Code: OLANZSO
Synonyms/Keywords
Zyprexa®​
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
Serum​ ​Red Top Tube (RTT) ​2 mL ​0.5 mL
​Plasma ​Lithium-heparin Green Top Tube or Sodium-heparin Green Top Tube (GTT) ​2 mL ​0.5 mL
Collection Processing Instructions

​Gel-barrier tubes are not recommended.

Trough levels are most reproducible.

Specimen Stability Information
Specimen Type Temperature Time
​Serum of Plasma ​ Ambient 3 days​
Refrigerated​14 days
​Frozen​6 months
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Medtox Laboratories​ Monday through Sunday​ 5-7 days​
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS-MS)​
Reference Lab
Reference Range Information
Performing Location Reference Range
Medtox Laboratories​
10.0 - 80.0 ng/ml​
Interpretation
Expected steady state concentrations in patients on recommended daily dosages: 10.0 - 80.0 ng/ml. Plasma concentrations of olanzapine greater than 9.0 ng/ml have been associated with therapeutic effect. Toxic range has not been established.
Outreach CPTs
CPT Modifier
(if needed)
Quantity Description Comments
​80342 ​1
​G0480 ​1 ​Medicare/MA
Synonyms/Keywords
Zyprexa®​
Ordering Applications
Ordering Application Description
​Centricity ​Olanzapine, Serum
​Cerner None​
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
Serum​ ​Red Top Tube (RTT) ​2 mL ​0.5 mL
​Plasma ​Lithium-heparin Green Top Tube or Sodium-heparin Green Top Tube (GTT) ​2 mL ​0.5 mL
Collection Processing

​Gel-barrier tubes are not recommended.

Trough levels are most reproducible.

Specimen Stability Information
Specimen Type Temperature Time
​Serum of Plasma ​ Ambient 3 days​
Refrigerated​14 days
​Frozen​6 months
Reference Range Information
Performing Location Reference Range
Medtox Laboratories​
10.0 - 80.0 ng/ml​
Interpretation
Expected steady state concentrations in patients on recommended daily dosages: 10.0 - 80.0 ng/ml. Plasma concentrations of olanzapine greater than 9.0 ng/ml have been associated with therapeutic effect. Toxic range has not been established.
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Medtox Laboratories​ Monday through Sunday​ 5-7 days​
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS-MS)​
Reference Lab
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)
Quantity Description Comments
​80342 ​1
​G0480 ​1 ​Medicare/MA
For most current information refer to the Marshfield Laboratory online reference manual.