LOINCActiveOrder

LOINC Code 78437-1: FLUoxetine trough, FLUoxetine+norfluoxetine trough and Norfluoxetine panel

78437-1 is a LOINC code used to identify FLUoxetine trough, FLUoxetine+norfluoxetine trough and Norfluoxetine panel in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Fluoxetine trough & Fluoxetine+norfluoxetine trough & Norfluoxetine panel. It is commonly used with the system or sample type Ser/Plas.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Fluoxetine trough & Fluoxetine+norfluoxetine trough & Norfluoxetine panel. It is commonly used with the system or sample type Ser/Plas.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: ACTIVE
  • Order vs observation: Order
  • Panel type: Panel

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • FLUoxetine trough, FLUoxetine+norfluoxetine trough and Norfluoxetine panel - Serum or Plasma
  • Fluoxetine trough & Fluoxetine+norfluoxetine trough & Norfluoxetine panel
  • Trough levels of fluoxetine and its major metabolite, norfluoxetine, are measured for managing co-medications, dose or formulation changes, and assessing compliance. Specimen is drawn at the expected trough (baseline) level of the parent drug.
  • (S)-Norfluoxetine; Desmethylfluoxetine; DRUG/TOXICOLOGY; Drugs; Fluox, Floux+Nor Trgh + Nor Pnl; Fluoxetine metabolite; Norfluoxetin; Pan; PANEL.DRUG & TOXICOLOGY; Panl; Pl; Plasma; Plsm; Pnl; Point in time; Prozac; QNT; Quan; Quant; Quantitative; Random; Seproxetine; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

FLUoxetine trough, FLUoxetine+norfluoxetine trough and Norfluoxetine panelFLUoxetine trough, FLUoxetine+norfluoxetine trough and Norfluoxetine panel - Serum or PlasmaFluox, Floux+Nor Trgh + Nor Pnl SerPlFluoxetine trough & Fluoxetine+norfluoxetine trough & Norfluoxetine panelPANEL.DRUG/TOXFLUoxetine Trough, FLUoxetine+norfluoxetine Trough and Norfluoxetine Panel, Blood-

Frequently asked questions

Code details

Code78437-1
SystemLOINC
Display nameFLUoxetine trough, FLUoxetine+norfluoxetine trough and Norfluoxetine panel
DescriptionFluoxetine trough & Fluoxetine+norfluoxetine trough & Norfluoxetine panel
Short nameFluox, Floux+Nor Trgh + Nor Pnl SerPl
ComponentFluoxetine trough & Fluoxetine+norfluoxetine trough & Norfluoxetine panel
Property-
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassPANEL.DRUG/TOX
StatusACTIVE
Order/ObservationOrder

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.54

Consumer names

FLUoxetine Trough, FLUoxetine+norfluoxetine Trough and Norfluoxetine Panel, Blood

Part names

FLUoxetine trough & FLUoxetine+norfluoxetine trough & Norfluoxetine panel-PtSer/PlasQnFLUoxetine trough, FLUoxetine+norfluoxetine trough and Norfluoxetine panelPoint in time (spot)Serum or Plasma

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

LOINC Code 78437-1 | HealthAssure