What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveOrder

LOINC Code 78434-8: carBAMazepine free and total trough and 10,11-Epoxide panel

Name: LOINC Code 78434-8: carBAMazepine free and total trough and 10,11-Epoxide panel
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:00.203Z

78434-8 is a LOINC code used to identify carBAMazepine free and total trough and 10,11-Epoxide 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 carBAMazepine free & total trough & 10,11-Epoxide 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 carBAMazepine free & total trough & 10,11-Epoxide 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

carBAMazepine free and total trough and 10,11-Epoxide panel - Serum or Plasma
carBAMazepine free & total trough & 10,11-Epoxide panel
Trough levels of carbamazepine free and total along with levels for 10,11-epoxide are measured for therapeutic anticonvulsant monitoring.
Carbamazapine; Carbamezapine; Carbazepine; Carbmzpn Trgh + Metab Pnl; CRBM; DRUG/TOXICOLOGY; Drugs; Epitol; FR; Non-protein bound; Pan; PANEL.DRUG & TOXICOLOGY; Panl; Pl; Plasma; Plsm; Pnl; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Tegretol; Teril; Tot; Totl

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

carBAMazepine free and total trough and 10,11-Epoxide panelcarBAMazepine free and total trough and 10,11-Epoxide panel - Serum or PlasmaCarbmzpn Trgh + Metab Pnl SerPlcarBAMazepine free & total trough & 10,11-Epoxide panelPANEL.DRUG/TOXFree and Total Trough and 10,11-Epoxide carBAMazepine panel, Blood-

Frequently asked questions

Code details

Code78434-8

SystemLOINC

Display namecarBAMazepine free and total trough and 10,11-Epoxide panel

DescriptioncarBAMazepine free & total trough & 10,11-Epoxide panel

Short nameCarbmzpn Trgh + Metab Pnl SerPl

ComponentcarBAMazepine free & total trough & 10,11-Epoxide 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

Free and Total Trough and 10,11-Epoxide carBAMazepine panel, Blood

Part names

carBAMazepine free & total trough & 10,11-Epoxide panel-PtSer/PlasQncarBAMazepine free and total trough and 10,11-Epoxide 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.