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Test Code FLUOX Fluoxetine, Serum

Reporting Name

Fluoxetine, S

Useful For

Monitoring serum concentration of fluoxetine during therapy

 

Evaluating potential toxicity

 

Evaluating patient compliance

Method Name

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

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum Red


Specimen Required


Collection Container/Tube: Red top (serum gel/SST are not acceptable)

Submission Container/Tube: Plastic vial

Specimen Volume: 1 mL

Collection Instructions:

1. Draw blood immediately before the next scheduled dose (trough).

2. Centrifuge and aliquot serum into plastic vial within 2 hours of collection.


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Red Refrigerated (preferred) 28 days
  Frozen  28 days
  Ambient  72 hours

Reject Due To

Gross hemolysis OK
Gross lipemia OK
Gross icterus OK

Reference Values

Fluoxetine + Norfluoxetine: 120-500 ng/mL

Day(s) Performed

Wednesday

CPT Code Information

80299

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FLUOX Fluoxetine, S 78437-1

 

Result ID Test Result Name Result LOINC Value
80228 Fluoxetine, S 74982-0
251 Norfluoxetine, S 3868-7
252 Fluoxetine+Norfluoxetine 74948-1

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

Report Available

1 to 8 days

Forms

If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.