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Test Code OLAN Olanzapine (Zyprexa)

Additional Codes

Mayo Test ID

Reporting Name

Olanzapine (Zyprexa)

Performing Laboratory

Medtox Laboratories, Inc.

Specimen Type


Specimen Required

Submit only 1 of the following specimens:



Draw blood in a green-top (sodium heparin) tube(s), plasma gel tube is not acceptable. Spin down and send 2 mL sodium heparin plasma refrigerated in a plastic vial.



Draw blood in a plain red-top tube(s), serum gel tube is not acceptable. Spin down and send 2 mL of serum refrigerated in a plastic vial.  

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time
Varies Refrigerated (preferred) 14 days
  Frozen  180 days
  Ambient  72 hours

Reference Values

Reference Range:          10.0 – 80.0 ng/mL


Expected steady state concentrations in patients on recommended daily dosages:

            10 – 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.


Day(s) and Time(s) Performed

Monday through Sunday

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FLNZ Olanzapine (Zyprexa) 12389-3


Result ID Test Result Name Result LOINC Value
Z1196 Olanzapine 12389-3

Analytic Time

3 days

NY State Approved


Method Name

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

Northwell Health Laboratories Additional Information:

Computer Interface Code

   PDM #  5908620