Analytic Time
5 - 9 days
Soft Order Code
FFTRZ
Test Updated:
Synonyms
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Test Overview
Test Methodology
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
Test Usage
Monitoring for optimal therapeutic concentrations or patient compliance.
Reference Range
800 – 1600 ng/mL
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Billing Information
CPT Code
80338
Pro Fee Code
LOINC
4064-2