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.

LOINCActiveBoth

LOINC Code 103604-5: Carbamazepine 10,11-Epoxide (U) [Mass/Vol]

Name: LOINC Code 103604-5: Carbamazepine 10,11-Epoxide (U) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:17.904Z

103604-5 is a LOINC code used to identify Carbamazepine 10,11-Epoxide (U) [Mass/Vol] 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 10,11-Epoxide. It is commonly used with the system or sample type Urine.

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 10,11-Epoxide. It is commonly used with the system or sample type Urine.

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: Both

What it does not mean

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

Key facts

Carbamazepine 10,11-Epoxide [Mass/volume] in Urine
carBAMazepine 10,11-Epoxide
Testing performed on urine specimens for the presence and quantitation of carbamazepine epoxide (a urinary metabolite of carbamazepine) in order to determine recent use of products containing carbamazepine.
Carbamazapine; Carbamazepine EP; Carbamazepine metabolite; Carbamezapine; Carbazepine; CRBM; DRUG/TOXICOLOGY; Drugs; Epitol; Level; Mass concentration; Point in time; QNT; Quan; Quant; Quantitative; Random; Tegretol; Teril; UA; UR; Urn

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 10,11-Epoxide (U) [Mass/Vol]Carbamazepine 10,11-Epoxide [Mass/volume] in UrineCarbamazepine EP Ur-mCnccarBAMazepine 10,11-EpoxideDRUG/TOXCarbamazepine 10,11-epoxide, UrineMCnc

Frequently asked questions

Code details

Code103604-5

SystemLOINC

Display nameCarbamazepine 10,11-Epoxide (U) [Mass/Vol]

DescriptioncarBAMazepine 10,11-Epoxide

Short nameCarbamazepine EP Ur-mCnc

ComponentcarBAMazepine 10,11-Epoxide

PropertyMCnc

TimingPt

System (specimen)Urine

ScaleQn

ClassDRUG/TOX

Example unitsng/ml

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.77

Last changed2.77

Consumer names

Carbamazepine 10,11-epoxide, Urine

Part names

Carbamazepine 10,11-EpoxideMCncPtUrineQnMass ConcentrationPoint in time (spot)

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.