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Specimen Collection Manual and Test Catalog

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FLUOXETINE

Geisinger Epic Procedure Code:  LAB2300    Geisinger Epic ID:  35457

SPECIMEN COLLECTION
Specimen type: 

Serum (preferred) or plasma


Preferred collection container: 
Alternate collection container: 
3 mL green/black top lithium heparin tube
3 mL lavender-top (K2 EDTA) tube
4 mL green/green-top (sodium heparin) tube
Specimen required: 

1 mL aliquot of serum (preferred) or plasma; minimum 0.5 mL


Special notes: 

Do not use serum separator/gel barrier tube.



SPECIMEN PROCESSING
Processing instructions: 

Centrifuge and immediately separate serum or plasma specimens from the cells into clean, plastic, screw-capped vial(s).


Transport temperature: 

Refrigerated (preferred) or room temperature.


Specimen stability: 

Room Temperature: 48 hours. Refrigerated: 5 days. Frozen: 1 month.


Rejection criteria: 

Serum separator tubes, gel barrier tubes not acceptable. Grossly hemolyzed or lipemic samples will be rejected.



TEST DETAILS
Reference interval: 

Total = 300-1150 ncg/mL. Detection limit 20 ng/mL.


CPT code(s):  80299 (Unspecified quantitative therapeutic drug) or 80332 (Definitive drug)
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.

Test includes: 

Norfluoxetine, Fluoxetine and Total.


Methodology: 
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Synonyms: 

Prozac, Quest test code 8389, FLUOX


Review Date:  11/14/2024

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